15931609116 has 48 divisors (see below), whose sum is σ = 37661541120. Its totient is φ = 5241075840.

The previous prime is 15931609103. The next prime is 15931609123. The reversal of 15931609116 is 61190613951.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 570561 + ... + 597831.

It is an arithmetic number, because the mean of its divisors is an integer number (784615440).

Almost surely, 2^15931609116 is an apocalyptic number.

It is an amenable number.

15931609116 is an abundant number, since it is smaller than the sum of its proper divisors (21729932004).

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

15931609116 is a wasteful number, since it uses less digits than its factorization.

15931609116 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27914 (or 27912 counting only the distinct ones).

The product of its (nonzero) digits is 43740, while the sum is 42.

The spelling of 15931609116 in words is "fifteen billion, nine hundred thirty-one million, six hundred nine thousand, one hundred sixteen".