56145683220 has 48 divisors (see below), whose sum is σ = 171499543488. Its totient is φ = 13611074560.

The previous prime is 56145683219. The next prime is 56145683261. The reversal of 56145683220 is 2238654165.

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, 42533949 + ... + 42535268.

It is an arithmetic number, because the mean of its divisors is an integer number (3572907156).

Almost surely, 2^56145683220 is an apocalyptic number.

It is an amenable number.

56145683220 is an abundant number, since it is smaller than the sum of its proper divisors (115353860268).

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

56145683220 is a wasteful number, since it uses less digits than its factorization.

56145683220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85069240 (or 85069238 counting only the distinct ones).

The product of its (nonzero) digits is 345600, while the sum is 42.

The spelling of 56145683220 in words is "fifty-six billion, one hundred forty-five million, six hundred eighty-three thousand, two hundred twenty".