56566839163536 has 240 divisors, whose sum is σ = 177334663396800. Its totient is φ = 17352592519680.

The previous prime is 56566839163531. The next prime is 56566839163543. The reversal of 56566839163536 is 63536193866565.

56566839163536 is a `hidden beast` number, since 5 + 6 + 5 + 6 + 6 + 83 + 9 + 1 + 6 + 3 + 536 = 666.

It is a Harshad number since it is a multiple of its sum of digits (72).

It is not an unprimeable number, because it can be changed into a prime (56566839163531) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 15039490 + ... + 18420638.

It is an arithmetic number, because the mean of its divisors is an integer number (738894430820).

Almost surely, 2^{56566839163536} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 56566839163536, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (88667331698400).

56566839163536 is an abundant number, since it is smaller than the sum of its proper divisors (120767824233264).

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

56566839163536 is a wasteful number, since it uses less digits than its factorization.

56566839163536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3381516 (or 3381498 counting only the distinct ones).

The product of its digits is 1889568000, while the sum is 72.

The spelling of 56566839163536 in words is "fifty-six trillion, five hundred sixty-six billion, eight hundred thirty-nine million, one hundred sixty-three thousand, five hundred thirty-six".