55966917900 has 72 divisors (see below), whose sum is σ = 163534314384. Its totient is φ = 14776736000.

The previous prime is 55966917893. The next prime is 55966917901. The reversal of 55966917900 is 971966955.

It is not an unprimeable number, because it can be changed into a prime (55966917901) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 893247 + ... + 953846.

It is an arithmetic number, because the mean of its divisors is an integer number (2271309922).

Almost surely, 2^55966917900 is an apocalyptic number.

55966917900 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

55966917900 is an abundant number, since it is smaller than the sum of its proper divisors (107567396484).

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

55966917900 is a wasteful number, since it uses less digits than its factorization.

55966917900 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1847211 (or 1847204 counting only the distinct ones).

The product of its (nonzero) digits is 4592700, while the sum is 57.

The spelling of 55966917900 in words is "fifty-five billion, nine hundred sixty-six million, nine hundred seventeen thousand, nine hundred".