56816554873 has 32 divisors (see below), whose sum is σ = 62720935200. Its totient is φ = 51151896576.

The previous prime is 56816554849. The next prime is 56816554889. The reversal of 56816554873 is 37845561865.

It can be written as a sum of positive squares in 16 ways, for example, as 19749524089 + 37067030784 = 140533^2 + 192528^2 .

It is a cyclic number.

It is not a de Polignac number, because 56816554873 - 2⁵ = 56816554841 is a prime.

It is a super-2 number, since 2×56816554873² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56816554673) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 32410165 + ... + 32411917.

It is an arithmetic number, because the mean of its divisors is an integer number (1960029225).

Almost surely, 2^56816554873 is an apocalyptic number.

It is an amenable number.

56816554873 is a deficient number, since it is larger than the sum of its proper divisors (5904380327).

56816554873 is a wasteful number, since it uses less digits than its factorization.

56816554873 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2221.

The product of its digits is 24192000, while the sum is 58.

The spelling of 56816554873 in words is "fifty-six billion, eight hundred sixteen million, five hundred fifty-four thousand, eight hundred seventy-three".