15972648520 has 96 divisors (see below), whose sum is σ = 38275286400. Its totient is φ = 5997734912.

The previous prime is 15972648499. The next prime is 15972648533. The reversal of 15972648520 is 2584627951.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5119521 + ... + 5122639.

It is an arithmetic number, because the mean of its divisors is an integer number (398700900).

Almost surely, 2^15972648520 is an apocalyptic number.

15972648520 is a gapful number since it is divisible by the number (10) 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 15972648520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19137643200).

15972648520 is an abundant number, since it is smaller than the sum of its proper divisors (22302637880).

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

15972648520 is a wasteful number, since it uses less digits than its factorization.

15972648520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3607 (or 3586 counting only the distinct ones).

The product of its (nonzero) digits is 1209600, while the sum is 49.

The spelling of 15972648520 in words is "fifteen billion, nine hundred seventy-two million, six hundred forty-eight thousand, five hundred twenty".