56785551880 has 32 divisors (see below), whose sum is σ = 128481292800. Its totient is φ = 22587322816.

The previous prime is 56785551859. The next prime is 56785551881. The reversal of 56785551880 is 8815558765.

It is not an unprimeable number, because it can be changed into a prime (56785551881) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3958312 + ... + 3972631.

It is an arithmetic number, because the mean of its divisors is an integer number (4015040400).

Almost surely, 2^56785551880 is an apocalyptic number.

It is an amenable number.

56785551880 is an abundant number, since it is smaller than the sum of its proper divisors (71695740920).

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

56785551880 is a wasteful number, since it uses less digits than its factorization.

56785551880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7931133 (or 7931129 counting only the distinct ones).

The product of its (nonzero) digits is 13440000, while the sum is 58.

The spelling of 56785551880 in words is "fifty-six billion, seven hundred eighty-five million, five hundred fifty-one thousand, eight hundred eighty".