16865664988 has 12 divisors (see below), whose sum is σ = 29552422312. Its totient is φ = 8422115760.

The previous prime is 16865664961. The next prime is 16865665013. The reversal of 16865664988 is 88946656861.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2675643 + ... + 2681938.

Almost surely, 2^16865664988 is an apocalyptic number.

It is an amenable number.

16865664988 is a deficient number, since it is larger than the sum of its proper divisors (12686757324).

16865664988 is a wasteful number, since it uses less digits than its factorization.

16865664988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5358372 (or 5358370 counting only the distinct ones).

The product of its digits is 119439360, while the sum is 67.

The spelling of 16865664988 in words is "sixteen billion, eight hundred sixty-five million, six hundred sixty-four thousand, nine hundred eighty-eight".