56113969920 has 288 divisors, whose sum is σ = 196305923520. Its totient is φ = 13597409280.

The previous prime is 56113969909. The next prime is 56113969987. The reversal of 56113969920 is 2996931165.

It is a hoax number, since the sum of its digits (51) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1878300 + ... + 1907940.

It is an arithmetic number, because the mean of its divisors is an integer number (681617790).

Almost surely, 2^56113969920 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 56113969920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (98152961760).

56113969920 is an abundant number, since it is smaller than the sum of its proper divisors (140191953600).

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

56113969920 is a wasteful number, since it uses less digits than its factorization.

56113969920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29711 (or 29697 counting only the distinct ones).

The product of its (nonzero) digits is 787320, while the sum is 51.

The spelling of 56113969920 in words is "fifty-six billion, one hundred thirteen million, nine hundred sixty-nine thousand, nine hundred twenty".