56615775980 has 24 divisors (see below), whose sum is σ = 118912110912. Its totient is φ = 22642694912.

The previous prime is 56615775967. The next prime is 56615776043. The reversal of 56615775980 is 8957751665.

It is a happy number.

56615775980 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, 95732 + ... + 349851.

It is an arithmetic number, because the mean of its divisors is an integer number (4954671288).

Almost surely, 2^56615775980 is an apocalyptic number.

It is an amenable number.

56615775980 is an abundant number, since it is smaller than the sum of its proper divisors (62296334932).

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

56615775980 is a wasteful number, since it uses less digits than its factorization.

56615775980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 451945 (or 451943 counting only the distinct ones).

The product of its (nonzero) digits is 15876000, while the sum is 59.

The spelling of 56615775980 in words is "fifty-six billion, six hundred fifteen million, seven hundred seventy-five thousand, nine hundred eighty".