12666925644 has 48 divisors (see below), whose sum is σ = 29818134528. Its totient is φ = 4184949888.

The previous prime is 12666925639. The next prime is 12666925651. The reversal of 12666925644 is 44652966621.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1814649 + ... + 1821615.

It is an arithmetic number, because the mean of its divisors is an integer number (621211136).

Almost surely, 2^12666925644 is an apocalyptic number.

It is an amenable number.

12666925644 is an abundant number, since it is smaller than the sum of its proper divisors (17151208884).

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

12666925644 is a wasteful number, since it uses less digits than its factorization.

12666925644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8294 (or 8292 counting only the distinct ones).

The product of its digits is 3732480, while the sum is 51.

The spelling of 12666925644 in words is "twelve billion, six hundred sixty-six million, nine hundred twenty-five thousand, six hundred forty-four".