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68202670483920 = 24357310913057841
BaseRepresentation
bin11111000000111101010111…
…11100100110100111010000
322221111010000101001020120210
433200132223330212213100
532414413032120441140
6401015512502204120
720236323516563250
oct1740365374464720
9287433011036523
1068202670483920
111a8056544a2645
127796174423640
132c0963ab125cb
1412bb053a05960
157d4194641d80
hex3e07abf269d0

68202670483920 has 160 divisors (see below), whose sum is σ = 241710057066240. Its totient is φ = 15584166420480.

The previous prime is 68202670483903. The next prime is 68202670483979. The reversal of 68202670483920 is 2938407620286.

It is a happy number.

It is a super-2 number, since 2×682026704839202 (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1305801 + ... + 11752040.

It is an arithmetic number, because the mean of its divisors is an integer number (1510687856664).

Almost surely, 268202670483920 is an apocalyptic number.

68202670483920 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 68202670483920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (120855028533120).

68202670483920 is an abundant number, since it is smaller than the sum of its proper divisors (173507386582320).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

68202670483920 is a wasteful number, since it uses less digits than its factorization.

68202670483920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13060973 (or 13060967 counting only the distinct ones).

The product of its (nonzero) digits is 13934592, while the sum is 57.

The spelling of 68202670483920 in words is "sixty-eight trillion, two hundred two billion, six hundred seventy million, four hundred eighty-three thousand, nine hundred twenty".

Divisors: 1 2 3 4 5 6 7 8 10 12 14 15 16 20 21 24 28 30 35 40 42 48 56 60 70 80 84 105 112 120 140 168 210 240 280 336 420 560 840 1680 3109 6218 9327 12436 15545 18654 21763 24872 31090 37308 43526 46635 49744 62180 65289 74616 87052 93270 108815 124360 130578 149232 174104 186540 217630 248720 261156 326445 348208 373080 435260 522312 652890 746160 870520 1044624 1305780 1741040 2611560 5223120 13057841 26115682 39173523 52231364 65289205 78347046 91404887 104462728 130578410 156694092 182809774 195867615 208925456 261156820 274214661 313388184 365619548 391735230 457024435 522313640 548429322 626776368 731239096 783470460 914048870 1044627280 1096858644 1371073305 1462478192 1566940920 1828097740 2193717288 2742146610 3133881840 3656195480 4387434576 5484293220 7312390960 10968586440 21937172880 40596827669 81193655338 121790483007 162387310676 202984138345 243580966014 284177793683 324774621352 405968276690 487161932028 568355587366 608952415035 649549242704 811936553380 852533381049 974323864056 1136711174732 1217904830070 1420888968415 1623873106760 1705066762098 1948647728112 2273422349464 2435809660140 2841777936830 3247746213520 3410133524196 4262666905245 4546844698928 4871619320280 5683555873660 6820267048392 8525333810490 9743238640560 11367111747320 13640534096784 17050667620980 22734223494640 34101335241960 68202670483920