15972116000 has 48 divisors (see below), whose sum is σ = 39243498840. Its totient is φ = 6388844800.

The previous prime is 15972115969. The next prime is 15972116101. The reversal of 15972116000 is 61127951.

It can be written as a sum of positive squares in 4 ways, for example, as 5805830416 + 10166285584 = 76196^2 + 100828^2 .

It is a Harshad number since it is a multiple of its sum of digits (32).

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, 1992515 + ... + 2000514.

Almost surely, 2^15972116000 is an apocalyptic number.

15972116000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

15972116000 is an abundant number, since it is smaller than the sum of its proper divisors (23271382840).

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

15972116000 is an equidigital number, since it uses as much as digits as its factorization.

15972116000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3993054 (or 3993036 counting only the distinct ones).

The product of its (nonzero) digits is 3780, while the sum is 32.

The spelling of 15972116000 in words is "fifteen billion, nine hundred seventy-two million, one hundred sixteen thousand".