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68460776888 = 2372739323623
BaseRepresentation
bin111111110000100101…
…001000110110111000
320112201011000210201012
4333300211020312320
52110201424330023
651241144013052
74642344000500
oct776045106670
9215634023635
1068460776888
1127041361a59
1211327461188
1365c05a134a
143456422a00
151baa419978
hexff0948db8

68460776888 has 48 divisors (see below), whose sum is σ = 149347856880. Its totient is φ = 29335122432.

The previous prime is 68460776869. The next prime is 68460776893. The reversal of 68460776888 is 88867706486.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2886245 + ... + 2909867.

It is an arithmetic number, because the mean of its divisors is an integer number (3111413685).

Almost surely, 268460776888 is an apocalyptic number.

It is an amenable number.

68460776888 is an abundant number, since it is smaller than the sum of its proper divisors (80887079992).

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

68460776888 is a wasteful number, since it uses less digits than its factorization.

68460776888 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31036 (or 31025 counting only the distinct ones).

The product of its (nonzero) digits is 173408256, while the sum is 68.

The spelling of 68460776888 in words is "sixty-eight billion, four hundred sixty million, seven hundred seventy-six thousand, eight hundred eighty-eight".

Divisors: 1 2 4 7 8 14 28 49 56 98 196 392 7393 14786 23623 29572 47246 51751 59144 94492 103502 165361 188984 207004 330722 362257 414008 661444 724514 1157527 1322888 1449028 2315054 2898056 4630108 9260216 174644839 349289678 698579356 1222513873 1397158712 2445027746 4890055492 8557597111 9780110984 17115194222 34230388444 68460776888