56725681824 has 432 divisors, whose sum is σ = 195420266496. Its totient is φ = 15545779200.

The previous prime is 56725681801. The next prime is 56725681843. The reversal of 56725681824 is 42818652765.

56725681824 is a `hidden beast` number, since 5 + 6 + 72 + 568 + 1 + 8 + 2 + 4 = 666.

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 71 ways as a sum of consecutive naturals, for example, 55558434 + ... + 55559454.

It is an arithmetic number, because the mean of its divisors is an integer number (452361728).

Almost surely, 2^56725681824 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 56725681824, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (97710133248).

56725681824 is an abundant number, since it is smaller than the sum of its proper divisors (138694584672).

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

56725681824 is a wasteful number, since it uses less digits than its factorization.

56725681824 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1209 (or 1191 counting only the distinct ones).

The product of its digits is 6451200, while the sum is 54.

The spelling of 56725681824 in words is "fifty-six billion, seven hundred twenty-five million, six hundred eighty-one thousand, eight hundred twenty-four".