15479013972 has 24 divisors (see below), whose sum is σ = 36393410592. Its totient is φ = 5120284000.

The previous prime is 15479013889. The next prime is 15479013983. The reversal of 15479013972 is 27931097451.

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, 4921779 + ... + 4924922.

It is an arithmetic number, because the mean of its divisors is an integer number (1516392108).

Almost surely, 2^15479013972 is an apocalyptic number.

15479013972 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

15479013972 is an abundant number, since it is smaller than the sum of its proper divisors (20914396620).

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

15479013972 is a wasteful number, since it uses less digits than its factorization.

15479013972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9846839 (or 9846837 counting only the distinct ones).

The product of its (nonzero) digits is 476280, while the sum is 48.

The spelling of 15479013972 in words is "fifteen billion, four hundred seventy-nine million, thirteen thousand, nine hundred seventy-two".