57979897957 has 2 divisors, whose sum is σ = 57979897958. Its totient is φ = 57979897956.

The previous prime is 57979897939. The next prime is 57979898047. The reversal of 57979897957 is 75979897975.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 34190228836 + 23789669121 = 184906^2 + 154239^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-57979897957 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (57979897907) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28989948978 + 28989948979.

It is an arithmetic number, because the mean of its divisors is an integer number (28989948979).

Almost surely, 2^57979897957 is an apocalyptic number.

It is an amenable number.

57979897957 is a deficient number, since it is larger than the sum of its proper divisors (1).

57979897957 is an equidigital number, since it uses as much as digits as its factorization.

57979897957 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3150592200, while the sum is 82.

The spelling of 57979897957 in words is "fifty-seven billion, nine hundred seventy-nine million, eight hundred ninety-seven thousand, nine hundred fifty-seven".