56501056872 has 80 divisors (see below), whose sum is σ = 170428783140. Its totient is φ = 17384937984.

The previous prime is 56501056861. The next prime is 56501056873. The reversal of 56501056872 is 27865010565.

56501056872 is a `hidden beast` number, since 5 + 6 + 5 + 0 + 10 + 568 + 72 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 55068131556 + 1432925316 = 234666^2 + 37854^2 .

It is not an unprimeable number, because it can be changed into a prime (56501056873) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 3345153 + ... + 3362000.

Almost surely, 2^56501056872 is an apocalyptic number.

56501056872 is a gapful number since it is divisible by the number (52) formed by its first and last digit.

It is an amenable number.

56501056872 is an abundant number, since it is smaller than the sum of its proper divisors (113927726268).

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

56501056872 is a wasteful number, since it uses less digits than its factorization.

56501056872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6707184 (or 6707171 counting only the distinct ones).

The product of its (nonzero) digits is 504000, while the sum is 45.

The spelling of 56501056872 in words is "fifty-six billion, five hundred one million, fifty-six thousand, eight hundred seventy-two".