15312994868 has 24 divisors (see below), whose sum is σ = 28522658304. Its totient is φ = 7168380800.

The previous prime is 15312994831. The next prime is 15312994871. The reversal of 15312994868 is 86849921351.

It is a congruent number.

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, 576518 + ... + 602493.

It is an arithmetic number, because the mean of its divisors is an integer number (1188444096).

Almost surely, 2^15312994868 is an apocalyptic number.

It is an amenable number.

15312994868 is a deficient number, since it is larger than the sum of its proper divisors (13209663436).

15312994868 is a wasteful number, since it uses less digits than its factorization.

15312994868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1179223 (or 1179221 counting only the distinct ones).

The product of its digits is 3732480, while the sum is 56.

The spelling of 15312994868 in words is "fifteen billion, three hundred twelve million, nine hundred ninety-four thousand, eight hundred sixty-eight".