57817663979 has 16 divisors (see below), whose sum is σ = 61451426400. Its totient is φ = 54294395904.

The previous prime is 57817663951. The next prime is 57817663999. The reversal of 57817663979 is 97936671875.

It is a cyclic number.

It is not a de Polignac number, because 57817663979 - 2²⁴ = 57800886763 is a prime.

It is a super-2 number, since 2×57817663979² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (57817663999) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3282107 + ... + 3299675.

It is an arithmetic number, because the mean of its divisors is an integer number (3840714150).

Almost surely, 2^57817663979 is an apocalyptic number.

57817663979 is a deficient number, since it is larger than the sum of its proper divisors (3633762421).

57817663979 is a wasteful number, since it uses less digits than its factorization.

57817663979 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20702.

The product of its digits is 120022560, while the sum is 68.

The spelling of 57817663979 in words is "fifty-seven billion, eight hundred seventeen million, six hundred sixty-three thousand, nine hundred seventy-nine".