56875477457864 has 32 divisors (see below), whose sum is σ = 118804876659000. Its totient is φ = 25345040351232.

The previous prime is 56875477457831. The next prime is 56875477457921. The reversal of 56875477457864 is 46875477457865.

It can be written as a sum of positive squares in 4 ways, for example, as 24715712820100 + 32159764637764 = 4971490^2 + 5670958^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9428955449 + ... + 9428961480.

Almost surely, 2^{56875477457864} is an apocalyptic number.

It is an amenable number.

56875477457864 is an abundant number, since it is smaller than the sum of its proper divisors (61929399201136).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

56875477457864 is a wasteful number, since it uses less digits than its factorization.

56875477457864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18857916977 (or 18857916973 counting only the distinct ones).

The product of its digits is 44255232000, while the sum is 83.

Subtracting from 56875477457864 its reverse (46875477457865), we obtain a palindrome (9999999999999).

The spelling of 56875477457864 in words is "fifty-six trillion, eight hundred seventy-five billion, four hundred seventy-seven million, four hundred fifty-seven thousand, eight hundred sixty-four".