56861253220 has 48 divisors (see below), whose sum is σ = 120949351488. Its totient is φ = 22451495040.

The previous prime is 56861253079. The next prime is 56861253247. The reversal of 56861253220 is 2235216865.

It is a happy 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, 2039575 + ... + 2067265.

It is an arithmetic number, because the mean of its divisors is an integer number (2519778156).

Almost surely, 2^56861253220 is an apocalyptic number.

It is an amenable number.

56861253220 is an abundant number, since it is smaller than the sum of its proper divisors (64088098268).

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

56861253220 is a wasteful number, since it uses less digits than its factorization.

56861253220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29020 (or 29018 counting only the distinct ones).

The product of its (nonzero) digits is 172800, while the sum is 40.

The spelling of 56861253220 in words is "fifty-six billion, eight hundred sixty-one million, two hundred fifty-three thousand, two hundred twenty".