56878969680 has 120 divisors (see below), whose sum is σ = 205712307528. Its totient is φ = 14000974848.

The previous prime is 56878969669. The next prime is 56878969717. The reversal of 56878969680 is 8696987865.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 231161616 + 56647808064 = 15204^2 + 238008^2 .

It is a tau number, because it is divible by the number of its divisors (120).

It is a Harshad number since it is a multiple of its sum of digits (72).

It is a junction number, because it is equal to n+sod(n) for n = 56878969599 and 56878969608.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3029047 + ... + 3047766.

Almost surely, 2^56878969680 is an apocalyptic number.

It is an amenable number.

56878969680 is an abundant number, since it is smaller than the sum of its proper divisors (148833337848).

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

56878969680 is a wasteful number, since it uses less digits than its factorization.

56878969680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6076845 (or 6076836 counting only the distinct ones).

The product of its (nonzero) digits is 313528320, while the sum is 72.

The spelling of 56878969680 in words is "fifty-six billion, eight hundred seventy-eight million, nine hundred sixty-nine thousand, six hundred eighty".