16887566984 has 16 divisors (see below), whose sum is σ = 32756057100. Its totient is φ = 8152618432.

The previous prime is 16887566959. The next prime is 16887567007. The reversal of 16887566984 is 48966578861.

It can be written as a sum of positive squares in 2 ways, for example, as 16868294884 + 19272100 = 129878^2 + 4390^2 .

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, 36395387 + ... + 36395850.

Almost surely, 2^16887566984 is an apocalyptic number.

It is an amenable number.

16887566984 is a deficient number, since it is larger than the sum of its proper divisors (15868490116).

16887566984 is a wasteful number, since it uses less digits than its factorization.

16887566984 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72791272 (or 72791268 counting only the distinct ones).

The product of its digits is 139345920, while the sum is 68.

The spelling of 16887566984 in words is "sixteen billion, eight hundred eighty-seven million, five hundred sixty-six thousand, nine hundred eighty-four".