15390131268 has 24 divisors (see below), whose sum is σ = 36402230368. Its totient is φ = 5059768896.

The previous prime is 15390131231. The next prime is 15390131287. The reversal of 15390131268 is 86213109351.

It is a super-2 number, since 2×15390131268² (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 7 ways as a sum of consecutive naturals, for example, 8783446 + ... + 8785197.

Almost surely, 2^15390131268 is an apocalyptic number.

It is an amenable number.

15390131268 is an abundant number, since it is smaller than the sum of its proper divisors (21012099100).

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

15390131268 is a wasteful number, since it uses less digits than its factorization.

15390131268 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17568723 (or 17568721 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 39.

The spelling of 15390131268 in words is "fifteen billion, three hundred ninety million, one hundred thirty-one thousand, two hundred sixty-eight".