15997000679 has 16 divisors (see below), whose sum is σ = 17596656000. Its totient is φ = 14421732000.

The previous prime is 15997000609. The next prime is 15997000703. The reversal of 15997000679 is 97600079951.

It is a cyclic number.

It is not a de Polignac number, because 15997000679 - 2⁸ = 15997000423 is a prime.

It is a super-2 number, since 2×15997000679² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 15997000679.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15997000609) 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, 2779697 + ... + 2785445.

It is an arithmetic number, because the mean of its divisors is an integer number (1099791000).

Almost surely, 2^15997000679 is an apocalyptic number.

15997000679 is a deficient number, since it is larger than the sum of its proper divisors (1599655321).

15997000679 is a wasteful number, since it uses less digits than its factorization.

15997000679 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7822.

The product of its (nonzero) digits is 1071630, while the sum is 53.

The spelling of 15997000679 in words is "fifteen billion, nine hundred ninety-seven million, six hundred seventy-nine", and thus it is an aban number.