56566003931800 has 144 divisors (see below), whose sum is σ = 146716463373480. Its totient is φ = 20262448588800.

The previous prime is 56566003931777. The next prime is 56566003931807. The reversal of 56566003931800 is 813930066565.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56566003931807) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 15822169 + ... + 19064968.

Almost surely, 2^{56566003931800} is an apocalyptic number.

56566003931800 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

56566003931800 is an abundant number, since it is smaller than the sum of its proper divisors (90150459441680).

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

56566003931800 is a wasteful number, since it uses less digits than its factorization.

56566003931800 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34887242 (or 34887222 counting only the distinct ones).

The product of its (nonzero) digits is 3499200, while the sum is 52.

The spelling of 56566003931800 in words is "fifty-six trillion, five hundred sixty-six billion, three million, nine hundred thirty-one thousand, eight hundred".