12511564996 has 24 divisors (see below), whose sum is σ = 25045755840. Its totient is φ = 5357250912.

The previous prime is 12511564993. The next prime is 12511564997. The reversal of 12511564996 is 69946511521.

It is not an unprimeable number, because it can be changed into a prime (12511564993) 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 7 ways as a sum of consecutive naturals, for example, 170410 + ... + 232513.

It is an arithmetic number, because the mean of its divisors is an integer number (1043573160).

Almost surely, 2^12511564996 is an apocalyptic number.

It is an amenable number.

12511564996 is an abundant number, since it is smaller than the sum of its proper divisors (12534190844).

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

12511564996 is a wasteful number, since it uses less digits than its factorization.

12511564996 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 404043 (or 404041 counting only the distinct ones).

The product of its digits is 583200, while the sum is 49.

The spelling of 12511564996 in words is "twelve billion, five hundred eleven million, five hundred sixty-four thousand, nine hundred ninety-six".