56605551600 has 120 divisors (see below), whose sum is σ = 195274692592. Its totient is φ = 13933670400.

The previous prime is 56605551589. The next prime is 56605551631. The reversal of 56605551600 is 615550665.

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 (39).

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, 1798681 + ... + 1829880.

Almost surely, 2^56605551600 is an apocalyptic number.

56605551600 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

56605551600 is an abundant number, since it is smaller than the sum of its proper divisors (138669140992).

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

56605551600 is a wasteful number, since it uses less digits than its factorization.

56605551600 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3628595 (or 3628584 counting only the distinct ones).

The product of its (nonzero) digits is 135000, while the sum is 39.

The spelling of 56605551600 in words is "fifty-six billion, six hundred five million, five hundred fifty-one thousand, six hundred".