15990801172 has 12 divisors (see below), whose sum is σ = 28033610976. Its totient is φ = 7981198040.

The previous prime is 15990801161. The next prime is 15990801199. The reversal of 15990801172 is 27110809951.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3548104 + ... + 3552607.

It is an arithmetic number, because the mean of its divisors is an integer number (2336134248).

Almost surely, 2^15990801172 is an apocalyptic number.

It is an amenable number.

15990801172 is a deficient number, since it is larger than the sum of its proper divisors (12042809804).

15990801172 is a wasteful number, since it uses less digits than its factorization.

15990801172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7101278 (or 7101276 counting only the distinct ones).

The product of its (nonzero) digits is 45360, while the sum is 43.

The spelling of 15990801172 in words is "fifteen billion, nine hundred ninety million, eight hundred one thousand, one hundred seventy-two".