16666987882 has 16 divisors (see below), whose sum is σ = 25302684672. Its totient is φ = 8233117200.

The previous prime is 16666987877. The next prime is 16666987943. The reversal of 16666987882 is 28878966661.

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, 4423 + ... + 182629.

It is an arithmetic number, because the mean of its divisors is an integer number (1581417792).

Almost surely, 2^16666987882 is an apocalyptic number.

16666987882 is a deficient number, since it is larger than the sum of its proper divisors (8635696790).

16666987882 is a wasteful number, since it uses less digits than its factorization.

16666987882 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 178773.

The product of its digits is 83607552, while the sum is 67.

The spelling of 16666987882 in words is "sixteen billion, six hundred sixty-six million, nine hundred eighty-seven thousand, eight hundred eighty-two".