56883721556 has 48 divisors (see below), whose sum is σ = 107890465536. Its totient is φ = 26139469824.

The previous prime is 56883721541. The next prime is 56883721561. The reversal of 56883721556 is 65512738865.

It is a happy number.

56883721556 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×56883721556² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1395740 + ... + 1435916.

It is an arithmetic number, because the mean of its divisors is an integer number (2247718032).

Almost surely, 2^56883721556 is an apocalyptic number.

It is an amenable number.

56883721556 is a deficient number, since it is larger than the sum of its proper divisors (51006743980).

56883721556 is a wasteful number, since it uses less digits than its factorization.

56883721556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40688 (or 40686 counting only the distinct ones).

The product of its digits is 12096000, while the sum is 56.

The spelling of 56883721556 in words is "fifty-six billion, eight hundred eighty-three million, seven hundred twenty-one thousand, five hundred fifty-six".