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68955095520 = 25325311544693
BaseRepresentation
bin100000000111000001…
…0110100000111100000
320120222121011210101200
41000032002310013200
52112210001024040
651402203001200
74660525432623
oct1001602640740
9216877153350
1068955095520
1127275398953
1211444b09200
13666bb1748c
1434a1d39dba
151bd8a0e630
hex100e0b41e0

68955095520 has 144 divisors (see below), whose sum is σ = 242900042112. Its totient is φ = 17794851840.

The previous prime is 68955095501. The next prime is 68955095533. The reversal of 68955095520 is 2559055986.

68955095520 is a `hidden beast` number, since 6 + 89 + 5 + 5 + 0 + 9 + 552 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (144).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 727707 + ... + 816986.

It is an arithmetic number, because the mean of its divisors is an integer number (1686805848).

Almost surely, 268955095520 is an apocalyptic number.

68955095520 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

68955095520 is an abundant number, since it is smaller than the sum of its proper divisors (173944946592).

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

68955095520 is a wasteful number, since it uses less digits than its factorization.

68955095520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1544745 (or 1544734 counting only the distinct ones).

The product of its (nonzero) digits is 4860000, while the sum is 54.

It can be divided in two parts, 6895 and 5095520, that added together give a triangular number (5102415 = T3194).

The spelling of 68955095520 in words is "sixty-eight billion, nine hundred fifty-five million, ninety-five thousand, five hundred twenty".

Divisors: 1 2 3 4 5 6 8 9 10 12 15 16 18 20 24 30 31 32 36 40 45 48 60 62 72 80 90 93 96 120 124 144 155 160 180 186 240 248 279 288 310 360 372 465 480 496 558 620 720 744 930 992 1116 1240 1395 1440 1488 1860 2232 2480 2790 2976 3720 4464 4960 5580 7440 8928 11160 14880 22320 44640 1544693 3089386 4634079 6178772 7723465 9268158 12357544 13902237 15446930 18536316 23170395 24715088 27804474 30893860 37072632 46340790 47885483 49430176 55608948 61787720 69511185 74145264 92681580 95770966 111217896 123575440 139022370 143656449 148290528 185363160 191541932 222435792 239427415 247150880 278044740 287312898 370726320 383083864 430969347 444871584 478854830 556089480 574625796 718282245 741452640 766167728 861938694 957709660 1112178960 1149251592 1436564490 1532335456 1723877388 1915419320 2154846735 2224357920 2298503184 2873128980 3447754776 3830838640 4309693470 4597006368 5746257960 6895509552 7661677280 8619386940 11492515920 13791019104 17238773880 22985031840 34477547760 68955095520