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68055785737 = 315355317489
BaseRepresentation
bin111111011000011100…
…001110000100001001
320111122220222010021221
4333120130032010021
52103334240120422
651133035402041
74626325430332
oct773034160411
9214586863257
1068055785737
1126953798125
12112338b3321
136557703004
14341871d289
151b84abc3c7
hexfd870e109

68055785737 has 16 divisors (see below), whose sum is σ = 71599127040. Its totient is φ = 64597478400.

The previous prime is 68055785717. The next prime is 68055785747. The reversal of 68055785737 is 73758755086.

It is a cyclic number.

It is not a de Polignac number, because 68055785737 - 223 = 68047397129 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68055785717) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9083689 + ... + 9091177.

It is an arithmetic number, because the mean of its divisors is an integer number (4474945440).

Almost surely, 268055785737 is an apocalyptic number.

It is an amenable number.

68055785737 is a deficient number, since it is larger than the sum of its proper divisors (3543341303).

68055785737 is a wasteful number, since it uses less digits than its factorization.

68055785737 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13104.

The product of its (nonzero) digits is 49392000, while the sum is 61.

The spelling of 68055785737 in words is "sixty-eight billion, fifty-five million, seven hundred eighty-five thousand, seven hundred thirty-seven".

Divisors: 1 31 53 1643 5531 7489 171461 232159 293143 396917 9087433 12304427 41421659 1284071429 2195347927 68055785737