12456688892 has 24 divisors (see below), whose sum is σ = 21913283280. Its totient is φ = 6195824640.

The previous prime is 12456688889. The next prime is 12456688931. The reversal of 12456688892 is 29888665421.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 701459 + ... + 718997.

It is an arithmetic number, because the mean of its divisors is an integer number (913053470).

Almost surely, 2^12456688892 is an apocalyptic number.

It is an amenable number.

12456688892 is a deficient number, since it is larger than the sum of its proper divisors (9456594388).

12456688892 is a wasteful number, since it uses less digits than its factorization.

12456688892 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18461 (or 18459 counting only the distinct ones).

The product of its digits is 13271040, while the sum is 59.

The spelling of 12456688892 in words is "twelve billion, four hundred fifty-six million, six hundred eighty-eight thousand, eight hundred ninety-two".