16868986728 has 64 divisors (see below), whose sum is σ = 46029470400. Its totient is φ = 5109242880.

The previous prime is 16868986727. The next prime is 16868986781. The reversal of 16868986728 is 82768986861.

It is not an unprimeable number, because it can be changed into a prime (16868986727) 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, 547050 + ... + 577062.

It is an arithmetic number, because the mean of its divisors is an integer number (719210475).

Almost surely, 2^16868986728 is an apocalyptic number.

It is an amenable number.

16868986728 is an abundant number, since it is smaller than the sum of its proper divisors (29160483672).

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

16868986728 is a wasteful number, since it uses less digits than its factorization.

16868986728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32162 (or 32158 counting only the distinct ones).

The product of its digits is 111476736, while the sum is 69.

The spelling of 16868986728 in words is "sixteen billion, eight hundred sixty-eight million, nine hundred eighty-six thousand, seven hundred twenty-eight".