12564039008 has 24 divisors (see below), whose sum is σ = 24755623200. Its totient is φ = 6276896640.

The previous prime is 12564039001. The next prime is 12564039031. The reversal of 12564039008 is 80093046521.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12564039001) 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, 120083 + ... + 198866.

It is an arithmetic number, because the mean of its divisors is an integer number (1031484300).

Almost surely, 2^12564039008 is an apocalyptic number.

It is an amenable number.

12564039008 is a deficient number, since it is larger than the sum of its proper divisors (12191584192).

12564039008 is a wasteful number, since it uses less digits than its factorization.

12564039008 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 320190 (or 320182 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 38.

The spelling of 12564039008 in words is "twelve billion, five hundred sixty-four million, thirty-nine thousand, eight".