56645565620 has 48 divisors (see below), whose sum is σ = 136653823488. Its totient is φ = 19320698880.

The previous prime is 56645565619. The next prime is 56645565623. The reversal of 56645565620 is 2656554665.

56645565620 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56645565623) 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, 1021196 + ... + 1075235.

It is an arithmetic number, because the mean of its divisors is an integer number (2846954656).

Almost surely, 2^56645565620 is an apocalyptic number.

It is an amenable number.

56645565620 is an abundant number, since it is smaller than the sum of its proper divisors (80008257868).

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

56645565620 is a wasteful number, since it uses less digits than its factorization.

56645565620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2096640 (or 2096638 counting only the distinct ones).

The product of its (nonzero) digits is 6480000, while the sum is 50.

The spelling of 56645565620 in words is "fifty-six billion, six hundred forty-five million, five hundred sixty-five thousand, six hundred twenty".