56979029820 has 48 divisors (see below), whose sum is σ = 164687781888. Its totient is φ = 14704265280.

The previous prime is 56979029797. The next prime is 56979029893. The reversal of 56979029820 is 2892097965.

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, 15315084 + ... + 15318803.

It is an arithmetic number, because the mean of its divisors is an integer number (3430995456).

Almost surely, 2^56979029820 is an apocalyptic number.

It is an amenable number.

56979029820 is an abundant number, since it is smaller than the sum of its proper divisors (107708752068).

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

56979029820 is a wasteful number, since it uses less digits than its factorization.

56979029820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30633930 (or 30633928 counting only the distinct ones).

The product of its (nonzero) digits is 4898880, while the sum is 57.

The spelling of 56979029820 in words is "fifty-six billion, nine hundred seventy-nine million, twenty-nine thousand, eight hundred twenty".