56513469888 has 252 divisors, whose sum is σ = 172057591368. Its totient is φ = 17731906560.

The previous prime is 56513469877. The next prime is 56513469893. The reversal of 56513469888 is 88896431565.

56513469888 is a `hidden beast` number, since 56 + 513 + 4 + 69 + 8 + 8 + 8 = 666.

It is a Smith number, since the sum of its digits (63) coincides with the sum of the digits of its prime factors.

Its product of digits (49766400) is a multiple of the sum of its prime factors (1800).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 35972143 + ... + 35973713.

Almost surely, 2^56513469888 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 56513469888, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (86028795684).

56513469888 is an abundant number, since it is smaller than the sum of its proper divisors (115544121480).

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

56513469888 is a wasteful number, since it uses less digits than its factorization.

56513469888 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1800 (or 1768 counting only the distinct ones).

The product of its digits is 49766400, while the sum is 63.

The spelling of 56513469888 in words is "fifty-six billion, five hundred thirteen million, four hundred sixty-nine thousand, eight hundred eighty-eight".