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57902931643 = 471231977269
BaseRepresentation
bin110101111011010010…
…001001111010111011
312112110100120200202211
4311323102021322323
51422041122303033
642333352435551
74116613540534
oct657322117273
9175410520684
1057902931643
1122613771617
12b27b6a8bb7
1355ca15783b
142b3416b68b
15178d5b92cd
hexd7b489ebb

57902931643 has 4 divisors (see below), whose sum is σ = 59134908960. Its totient is φ = 56670954328.

The previous prime is 57902931629. The next prime is 57902931683. The reversal of 57902931643 is 34613920975.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 57902931643 - 29 = 57902931131 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (57902931683) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 615988588 + ... + 615988681.

It is an arithmetic number, because the mean of its divisors is an integer number (14783727240).

Almost surely, 257902931643 is an apocalyptic number.

57902931643 is a deficient number, since it is larger than the sum of its proper divisors (1231977317).

57902931643 is a wasteful number, since it uses less digits than its factorization.

57902931643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1231977316.

The product of its (nonzero) digits is 1224720, while the sum is 49.

The spelling of 57902931643 in words is "fifty-seven billion, nine hundred two million, nine hundred thirty-one thousand, six hundred forty-three".

Divisors: 1 47 1231977269 57902931643