56809467720 has 64 divisors (see below), whose sum is σ = 189364896000. Its totient is φ = 15149191104.

The previous prime is 56809467709. The next prime is 56809467721. The reversal of 56809467720 is 2776490865.

56809467720 is a `hidden beast` number, since 568 + 0 + 9 + 4 + 6 + 7 + 72 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (56809467721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26299600 + ... + 26301759.

It is an arithmetic number, because the mean of its divisors is an integer number (2958826500).

Almost surely, 2^56809467720 is an apocalyptic number.

It is an amenable number.

56809467720 is an abundant number, since it is smaller than the sum of its proper divisors (132555428280).

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

56809467720 is a wasteful number, since it uses less digits than its factorization.

56809467720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52601379 (or 52601369 counting only the distinct ones).

The product of its (nonzero) digits is 5080320, while the sum is 54.

The spelling of 56809467720 in words is "fifty-six billion, eight hundred nine million, four hundred sixty-seven thousand, seven hundred twenty".