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68926826680 = 23519816111113
BaseRepresentation
bin100000000110001011…
…0111110100010111000
320120220121222120211121
41000030112332202320
52112130231423210
651355313035024
74660033234315
oct1001426764270
9216817876747
1068926826680
1127260440078
1211437555a74
136665cca45a
14349c29bd0c
151bd62c86da
hex100c5be8b8

68926826680 has 64 divisors (see below), whose sum is σ = 163282442400. Its totient is φ = 26114088960.

The previous prime is 68926826677. The next prime is 68926826711. The reversal of 68926826680 is 8662862986.

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, 6196804 + ... + 6207916.

Almost surely, 268926826680 is an apocalyptic number.

It is an amenable number.

68926826680 is an abundant number, since it is smaller than the sum of its proper divisors (94355615720).

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

68926826680 is a wasteful number, since it uses less digits than its factorization.

68926826680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19304 (or 19300 counting only the distinct ones).

The product of its (nonzero) digits is 23887872, while the sum is 61.

The spelling of 68926826680 in words is "sixty-eight billion, nine hundred twenty-six million, eight hundred twenty-six thousand, six hundred eighty".

Divisors: 1 2 4 5 8 10 19 20 38 40 76 95 152 190 380 760 8161 11113 16322 22226 32644 40805 44452 55565 65288 81610 88904 111130 155059 163220 211147 222260 310118 326440 422294 444520 620236 775295 844588 1055735 1240472 1550590 1689176 2111470 3101180 4222940 6202360 8445880 90693193 181386386 362772772 453465965 725545544 906931930 1723170667 1813863860 3446341334 3627727720 6892682668 8615853335 13785365336 17231706670 34463413340 68926826680