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68125542051 = 3723928347963
BaseRepresentation
bin111111011100100110…
…010100011010100011
320111211210020002222010
4333130212110122203
52104010114321201
651144010444003
74631133360450
oct773446243243
9214753202863
1068125542051
112698a102076
1211253133603
136568cb7938
143423aba827
151b8ac9abd6
hexfdc9946a3

68125542051 has 32 divisors (see below), whose sum is σ = 104615239680. Its totient is φ = 38628211104.

The previous prime is 68125541983. The next prime is 68125542073. The reversal of 68125542051 is 15024552186.

It is not a de Polignac number, because 68125542051 - 210 = 68125541027 is a prime.

It is not an unprimeable number, because it can be changed into a prime (68125542091) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1396396 + ... + 1444358.

It is an arithmetic number, because the mean of its divisors is an integer number (3269226240).

Almost surely, 268125542051 is an apocalyptic number.

68125542051 is a deficient number, since it is larger than the sum of its proper divisors (36489697629).

68125542051 is a wasteful number, since it uses less digits than its factorization.

68125542051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48495.

The product of its (nonzero) digits is 96000, while the sum is 39.

The spelling of 68125542051 in words is "sixty-eight billion, one hundred twenty-five million, five hundred forty-two thousand, fifty-one".

Divisors: 1 3 7 21 239 283 717 849 1673 1981 5019 5943 47963 67637 143889 202911 335741 473459 1007223 1420377 11463157 13573529 34389471 40720587 80242099 95014703 240726297 285044109 3244073431 9732220293 22708514017 68125542051