56554989908 has 12 divisors (see below), whose sum is σ = 99251606580. Its totient is φ = 28197388032.

The previous prime is 56554989833. The next prime is 56554989919. The reversal of 56554989908 is 80998945565.

It can be written as a sum of positive squares in 2 ways, for example, as 26037695044 + 30517294864 = 161362^2 + 174692^2 .

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 20025143 + ... + 20027966.

It is an arithmetic number, because the mean of its divisors is an integer number (8270967215).

Almost surely, 2^56554989908 is an apocalyptic number.

It is an amenable number.

56554989908 is a deficient number, since it is larger than the sum of its proper divisors (42696616672).

56554989908 is a wasteful number, since it uses less digits than its factorization.

56554989908 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40053466 (or 40053464 counting only the distinct ones).

The product of its (nonzero) digits is 139968000, while the sum is 68.

The spelling of 56554989908 in words is "fifty-six billion, five hundred fifty-four million, nine hundred eighty-nine thousand, nine hundred eight".