12651125664 has 48 divisors (see below), whose sum is σ = 33377829408. Its totient is φ = 4195629312.

The previous prime is 12651125659. The next prime is 12651125693. The reversal of 12651125664 is 46652115621.

It is a tau number, because it is divible by the number of its divisors (48).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 315562 + ... + 353385.

It is an arithmetic number, because the mean of its divisors is an integer number (695371446).

Almost surely, 2^12651125664 is an apocalyptic number.

It is an amenable number.

12651125664 is an abundant number, since it is smaller than the sum of its proper divisors (20726703744).

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

12651125664 is a wasteful number, since it uses less digits than its factorization.

12651125664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 669157 (or 669149 counting only the distinct ones).

The product of its digits is 86400, while the sum is 39.

The spelling of 12651125664 in words is "twelve billion, six hundred fifty-one million, one hundred twenty-five thousand, six hundred sixty-four".