56720020460 has 12 divisors (see below), whose sum is σ = 119112043008. Its totient is φ = 22688008176.

The previous prime is 56720020433. The next prime is 56720020471. The reversal of 56720020460 is 6402002765.

It is a super-2 number, since 2×56720020460² (a number of 22 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (32) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1418000492 + ... + 1418000531.

It is an arithmetic number, because the mean of its divisors is an integer number (9926003584).

Almost surely, 2^56720020460 is an apocalyptic number.

It is an amenable number.

56720020460 is an abundant number, since it is smaller than the sum of its proper divisors (62392022548).

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

56720020460 is a wasteful number, since it uses less digits than its factorization.

56720020460 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2836001032 (or 2836001030 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 32.

The spelling of 56720020460 in words is "fifty-six billion, seven hundred twenty million, twenty thousand, four hundred sixty".