15996704832 has 84 divisors (see below), whose sum is σ = 45966673116. Its totient is φ = 5318860800.

The previous prime is 15996704821. The next prime is 15996704887. The reversal of 15996704832 is 23840769951.

15996704832 is a `hidden beast` number, since 1 + 5 + 9 + 96 + 70 + 483 + 2 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 14741845056 + 1254859776 = 121416^2 + 35424^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 196348 + ... + 265604.

It is an arithmetic number, because the mean of its divisors is an integer number (547222299).

It is a 1-persistent number, because it is pandigital, but 2⋅15996704832 = 31993409664 is not.

Almost surely, 2^15996704832 is an apocalyptic number.

15996704832 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 15996704832, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22983336558).

15996704832 is an abundant number, since it is smaller than the sum of its proper divisors (29969968284).

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

15996704832 is a wasteful number, since it uses less digits than its factorization.

15996704832 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69676 (or 69663 counting only the distinct ones).

The product of its (nonzero) digits is 3265920, while the sum is 54.

The spelling of 15996704832 in words is "fifteen billion, nine hundred ninety-six million, seven hundred four thousand, eight hundred thirty-two".