15991674976 has 48 divisors (see below), whose sum is σ = 33200843760. Its totient is φ = 7561244160.

The previous prime is 15991674953. The next prime is 15991674997. The reversal of 15991674976 is 67947619951.

It is a congruent number.

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, 315046 + ... + 362266.

It is an arithmetic number, because the mean of its divisors is an integer number (691684245).

Almost surely, 2^15991674976 is an apocalyptic number.

15991674976 is a gapful number since it is divisible by the number (16) 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 15991674976, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16600421880).

15991674976 is an abundant number, since it is smaller than the sum of its proper divisors (17209168784).

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

15991674976 is a wasteful number, since it uses less digits than its factorization.

15991674976 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47807 (or 47799 counting only the distinct ones).

The product of its digits is 25719120, while the sum is 64.

The spelling of 15991674976 in words is "fifteen billion, nine hundred ninety-one million, six hundred seventy-four thousand, nine hundred seventy-six".