15380929872 has 360 divisors, whose sum is σ = 55670677920. Its totient is φ = 3918620160.

The previous prime is 15380929867. The next prime is 15380929891. The reversal of 15380929872 is 27892908351.

15380929872 is a `hidden beast` number, since 1 + 538 + 0 + 9 + 29 + 87 + 2 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 4111779 + ... + 4115517.

It is an arithmetic number, because the mean of its divisors is an integer number (154640772).

Almost surely, 2^15380929872 is an apocalyptic number.

15380929872 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 15380929872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27835338960).

15380929872 is an abundant number, since it is smaller than the sum of its proper divisors (40289748048).

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

15380929872 is a wasteful number, since it uses less digits than its factorization.

15380929872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3831 (or 3815 counting only the distinct ones).

The product of its (nonzero) digits is 2177280, while the sum is 54.

The spelling of 15380929872 in words is "fifteen billion, three hundred eighty million, nine hundred twenty-nine thousand, eight hundred seventy-two".