15679629972 has 48 divisors (see below), whose sum is σ = 40660872000. Its totient is φ = 5225260320.

The previous prime is 15679629949. The next prime is 15679630063. The reversal of 15679629972 is 27992697651.

15679629972 is a `hidden beast` number, since 1 + 567 + 9 + 62 + 9 + 9 + 7 + 2 = 666.

It is a congruent number.

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, 491154 + ... + 522102.

It is an arithmetic number, because the mean of its divisors is an integer number (847101500).

Almost surely, 2^15679629972 is an apocalyptic number.

15679629972 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

15679629972 is an abundant number, since it is smaller than the sum of its proper divisors (24981242028).

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

15679629972 is a wasteful number, since it uses less digits than its factorization.

15679629972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35653 (or 35645 counting only the distinct ones).

The product of its digits is 25719120, while the sum is 63.

The spelling of 15679629972 in words is "fifteen billion, six hundred seventy-nine million, six hundred twenty-nine thousand, nine hundred seventy-two".