15318963216 has 80 divisors (see below), whose sum is σ = 43985934720. Its totient is φ = 5104598400.

The previous prime is 15318963181. The next prime is 15318963227. The reversal of 15318963216 is 61236981351.

15318963216 is a `hidden beast` number, since 1 + 5 + 3 + 1 + 8 + 9 + 632 + 1 + 6 = 666.

It is a super-2 number, since 2×15318963216² (a number of 21 digits) contains 22 as substring.

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, 2335141 + ... + 2341691.

It is an arithmetic number, because the mean of its divisors is an integer number (549824184).

Almost surely, 2^15318963216 is an apocalyptic number.

15318963216 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

15318963216 is an abundant number, since it is smaller than the sum of its proper divisors (28666971504).

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

15318963216 is a wasteful number, since it uses less digits than its factorization.

15318963216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11981 (or 11969 counting only the distinct ones).

The product of its digits is 233280, while the sum is 45.

The spelling of 15318963216 in words is "fifteen billion, three hundred eighteen million, nine hundred sixty-three thousand, two hundred sixteen".