15995797216 has 96 divisors (see below), whose sum is σ = 40113480960. Its totient is φ = 6112475136.

The previous prime is 15995797211. The next prime is 15995797219. The reversal of 15995797216 is 61279759951.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15995797211) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 38190 + ... + 182893.

It is an arithmetic number, because the mean of its divisors is an integer number (417848760).

Almost surely, 2^15995797216 is an apocalyptic number.

15995797216 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

15995797216 is an abundant number, since it is smaller than the sum of its proper divisors (24117683744).

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

15995797216 is a wasteful number, since it uses less digits than its factorization.

15995797216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 221136 (or 221128 counting only the distinct ones).

The product of its digits is 10716300, while the sum is 61.

The spelling of 15995797216 in words is "fifteen billion, nine hundred ninety-five million, seven hundred ninety-seven thousand, two hundred sixteen".