56581515600 has 120 divisors (see below), whose sum is σ = 185464727712. Its totient is φ = 14737497600.

The previous prime is 56581515563. The next prime is 56581515619. The reversal of 56581515600 is 651518565.

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

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, 496671 + ... + 599870.

Almost surely, 2^56581515600 is an apocalyptic number.

56581515600 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

56581515600 is an abundant number, since it is smaller than the sum of its proper divisors (128883212112).

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

56581515600 is a wasteful number, since it uses less digits than its factorization.

56581515600 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1096605 (or 1096594 counting only the distinct ones).

The product of its (nonzero) digits is 180000, while the sum is 42.

The spelling of 56581515600 in words is "fifty-six billion, five hundred eighty-one million, five hundred fifteen thousand, six hundred".