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68116413280 = 2551744415639
BaseRepresentation
bin111111011100000011…
…011111101101100000
320111211011001022122111
4333130003133231200
52104000300211110
651143043045104
74630662650116
oct773403375540
9214734038574
1068116413280
1126984a37533
1211250070794
13656713c7b6
1434227c1ab6
151b8a095e8a
hexfdc0dfb60

68116413280 has 96 divisors (see below), whose sum is σ = 170459795520. Its totient is φ = 25633505280.

The previous prime is 68116413271. The next prime is 68116413317. The reversal of 68116413280 is 8231461186.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12076701 + ... + 12082339.

It is an arithmetic number, because the mean of its divisors is an integer number (1775622870).

Almost surely, 268116413280 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 68116413280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (85229897760).

68116413280 is an abundant number, since it is smaller than the sum of its proper divisors (102343382240).

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

68116413280 is a wasteful number, since it uses less digits than its factorization.

68116413280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10112 (or 10104 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 40.

The spelling of 68116413280 in words is "sixty-eight billion, one hundred sixteen million, four hundred thirteen thousand, two hundred eighty".

Divisors: 1 2 4 5 8 10 16 17 20 32 34 40 68 80 85 136 160 170 272 340 544 680 1360 2720 4441 5639 8882 11278 17764 22205 22556 28195 35528 44410 45112 56390 71056 75497 88820 90224 95863 112780 142112 150994 177640 180448 191726 225560 301988 355280 377485 383452 451120 479315 603976 710560 754970 766904 902240 958630 1207952 1509940 1533808 1917260 2415904 3019880 3067616 3834520 6039760 7669040 12079520 15338080 25042799 50085598 100171196 125213995 200342392 250427990 400684784 425727583 500855980 801369568 851455166 1001711960 1702910332 2003423920 2128637915 3405820664 4006847840 4257275830 6811641328 8514551660 13623282656 17029103320 34058206640 68116413280