56012536645 has 16 divisors (see below), whose sum is σ = 73026020592. Its totient is φ = 40997053440.

The previous prime is 56012536597. The next prime is 56012536669. The reversal of 56012536645 is 54663521065.

It can be written as a sum of positive squares in 8 ways, for example, as 10367923329 + 45644613316 = 101823^2 + 213646^2 .

It is not a de Polignac number, because 56012536645 - 2¹¹ = 56012534597 is a prime.

It is a super-2 number, since 2×56012536645² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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, 3805626 + ... + 3820315.

It is an arithmetic number, because the mean of its divisors is an integer number (4564126287).

Almost surely, 2^56012536645 is an apocalyptic number.

It is an amenable number.

56012536645 is a deficient number, since it is larger than the sum of its proper divisors (17013483947).

56012536645 is a wasteful number, since it uses less digits than its factorization.

56012536645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7626072.

The product of its (nonzero) digits is 648000, while the sum is 43.

The spelling of 56012536645 in words is "fifty-six billion, twelve million, five hundred thirty-six thousand, six hundred forty-five".