56511020516120 has 32 divisors (see below), whose sum is σ = 127150372695600. Its totient is φ = 22604305711488.

The previous prime is 56511020516117. The next prime is 56511020516147. The reversal of 56511020516120 is 2161502011565.

It is a congruent number.

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, 6059666 + ... + 12236894.

Almost surely, 2^{56511020516120} is an apocalyptic number.

It is an amenable number.

56511020516120 is an abundant number, since it is smaller than the sum of its proper divisors (70639352179480).

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

56511020516120 is a wasteful number, since it uses less digits than its factorization.

56511020516120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6405947 (or 6405943 counting only the distinct ones).

The product of its (nonzero) digits is 18000, while the sum is 35.

Adding to 56511020516120 its reverse (2161502011565), we get a palindrome (58672522527685).

The spelling of 56511020516120 in words is "fifty-six trillion, five hundred eleven billion, twenty million, five hundred sixteen thousand, one hundred twenty".