15947812916 has 24 divisors (see below), whose sum is σ = 32418508416. Its totient is φ = 6722730720.

The previous prime is 15947812889. The next prime is 15947812939. The reversal of 15947812916 is 61921874951.

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, 4666856 + ... + 4670271.

It is an arithmetic number, because the mean of its divisors is an integer number (1350771184).

Almost surely, 2^15947812916 is an apocalyptic number.

It is an amenable number.

15947812916 is an abundant number, since it is smaller than the sum of its proper divisors (16470695500).

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

15947812916 is a wasteful number, since it uses less digits than its factorization.

15947812916 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9337199 (or 9337197 counting only the distinct ones).

The product of its digits is 1088640, while the sum is 53.

The spelling of 15947812916 in words is "fifteen billion, nine hundred forty-seven million, eight hundred twelve thousand, nine hundred sixteen".