56572261620 has 96 divisors (see below), whose sum is σ = 181071652608. Its totient is φ = 12927916032.

The previous prime is 56572261609. The next prime is 56572261663. The reversal of 56572261620 is 2616227565.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2288044 + ... + 2312636.

It is an arithmetic number, because the mean of its divisors is an integer number (1886163048).

Almost surely, 2^56572261620 is an apocalyptic number.

It is an amenable number.

56572261620 is an abundant number, since it is smaller than the sum of its proper divisors (124499390988).

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

56572261620 is a wasteful number, since it uses less digits than its factorization.

56572261620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30089 (or 30087 counting only the distinct ones).

The product of its (nonzero) digits is 302400, while the sum is 42.

The spelling of 56572261620 in words is "fifty-six billion, five hundred seventy-two million, two hundred sixty-one thousand, six hundred twenty".