12918732688 has 20 divisors (see below), whose sum is σ = 25034297008. Its totient is φ = 6458268960.

The previous prime is 12918732679. The next prime is 12918732709. The reversal of 12918732688 is 88623781921.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33103 + ... + 164113.

Almost surely, 2^12918732688 is an apocalyptic number.

It is an amenable number.

12918732688 is a deficient number, since it is larger than the sum of its proper divisors (12115564320).

12918732688 is a wasteful number, since it uses less digits than its factorization.

12918732688 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 137182 (or 137176 counting only the distinct ones).

The product of its digits is 2322432, while the sum is 55.

The spelling of 12918732688 in words is "twelve billion, nine hundred eighteen million, seven hundred thirty-two thousand, six hundred eighty-eight".