56442661156 has 36 divisors (see below), whose sum is σ = 116192191500. Its totient is φ = 23917910016.

The previous prime is 56442661153. The next prime is 56442661237. The reversal of 56442661156 is 65116624465.

It can be written as a sum of positive squares in 2 ways, for example, as 18655189056 + 37787472100 = 136584^2 + 194390^2 .

It is not an unprimeable number, because it can be changed into a prime (56442661151) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1600381 + ... + 1635268.

It is an arithmetic number, because the mean of its divisors is an integer number (3227560875).

Almost surely, 2^56442661156 is an apocalyptic number.

It is an amenable number.

56442661156 is an abundant number, since it is smaller than the sum of its proper divisors (59749530344).

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

56442661156 is a wasteful number, since it uses less digits than its factorization.

56442661156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3235756 (or 3235747 counting only the distinct ones).

The product of its digits is 1036800, while the sum is 46.

The spelling of 56442661156 in words is "fifty-six billion, four hundred forty-two million, six hundred sixty-one thousand, one hundred fifty-six".