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57166712157 = 322531845749
BaseRepresentation
bin110101001111011001…
…101100110101011101
312110120001020212111110
4311033121230311131
51414034134242112
642132333012233
74062434015202
oct651731546535
9173501225443
1057166712157
1122276133a65
12b0b5024079
1355107765c9
142aa4485ca9
151748b4013c
hexd4f66cd5d

57166712157 has 8 divisors (see below), whose sum is σ = 76225756000. Its totient is φ = 38109404880.

The previous prime is 57166712149. The next prime is 57166712167. The reversal of 57166712157 is 75121766175.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 57166712157 - 23 = 57166712149 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57166712167) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 355282 + ... + 490467.

It is an arithmetic number, because the mean of its divisors is an integer number (9528219500).

Almost surely, 257166712157 is an apocalyptic number.

It is an amenable number.

57166712157 is a deficient number, since it is larger than the sum of its proper divisors (19059043843).

57166712157 is a wasteful number, since it uses less digits than its factorization.

57166712157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 868283.

The product of its digits is 617400, while the sum is 48.

The spelling of 57166712157 in words is "fifty-seven billion, one hundred sixty-six million, seven hundred twelve thousand, one hundred fifty-seven".

Divisors: 1 3 22531 67593 845749 2537247 19055570719 57166712157