5126656564 has 12 divisors (see below), whose sum is σ = 9190469988. Its totient is φ = 2500808000.

The previous prime is 5126656547. The next prime is 5126656567. The reversal of 5126656564 is 4656566215.

It can be written as a sum of positive squares in 2 ways, for example, as 2001846564 + 3124810000 = 44742^2 + 55900^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5126656567) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15629887 + ... + 15630214.

It is an arithmetic number, because the mean of its divisors is an integer number (765872499).

Almost surely, 2^5126656564 is an apocalyptic number.

It is an amenable number.

5126656564 is a deficient number, since it is larger than the sum of its proper divisors (4063813424).

5126656564 is a wasteful number, since it uses less digits than its factorization.

5126656564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31260146 (or 31260144 counting only the distinct ones).

The product of its digits is 1296000, while the sum is 46.

The square root of 5126656564 is about 71600.6743264335. The cubic root of 5126656564 is about 1724.2943625394.

The spelling of 5126656564 in words is "five billion, one hundred twenty-six million, six hundred fifty-six thousand, five hundred sixty-four".