15995064768 has 56 divisors (see below), whose sum is σ = 42340572672. Its totient is φ = 5329131264.

The previous prime is 15995064749. The next prime is 15995064779. The reversal of 15995064768 is 86746059951.

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, 404871 + ... + 442617.

Almost surely, 2^15995064768 is an apocalyptic number.

It is an amenable number.

15995064768 is an abundant number, since it is smaller than the sum of its proper divisors (26345507904).

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

15995064768 is a wasteful number, since it uses less digits than its factorization.

15995064768 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39969 (or 39959 counting only the distinct ones).

The product of its (nonzero) digits is 16329600, while the sum is 60.

The spelling of 15995064768 in words is "fifteen billion, nine hundred ninety-five million, sixty-four thousand, seven hundred sixty-eight".