56513044020 has 48 divisors (see below), whose sum is σ = 163340932608. Its totient is φ = 14584010880.

The previous prime is 56513044013. The next prime is 56513044109. The reversal of 56513044020 is 2044031565.

It is a Harshad number since it is a multiple of its sum of digits (30).

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, 15189819 + ... + 15193538.

It is an arithmetic number, because the mean of its divisors is an integer number (3402936096).

Almost surely, 2^56513044020 is an apocalyptic number.

It is an amenable number.

56513044020 is an abundant number, since it is smaller than the sum of its proper divisors (106827888588).

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

56513044020 is a wasteful number, since it uses less digits than its factorization.

56513044020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30383400 (or 30383398 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 30.

Adding to 56513044020 its reverse (2044031565), we get a palindrome (58557075585).

The spelling of 56513044020 in words is "fifty-six billion, five hundred thirteen million, forty-four thousand, twenty".