12912320168 has 32 divisors (see below), whose sum is σ = 26418420000. Its totient is φ = 5867712960.

The previous prime is 12912320153. The next prime is 12912320173. The reversal of 12912320168 is 86102321921.

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, 365843 + ... + 399581.

It is an arithmetic number, because the mean of its divisors is an integer number (825575625).

Almost surely, 2^12912320168 is an apocalyptic number.

It is an amenable number.

12912320168 is an abundant number, since it is smaller than the sum of its proper divisors (13506099832).

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

12912320168 is a wasteful number, since it uses less digits than its factorization.

12912320168 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38105 (or 38101 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 35.

The spelling of 12912320168 in words is "twelve billion, nine hundred twelve million, three hundred twenty thousand, one hundred sixty-eight".