166884990834 has 16 divisors (see below), whose sum is σ = 334246124160. Its totient is φ = 55548973200.

The previous prime is 166884990821. The next prime is 166884990863. The reversal of 166884990834 is 438099488661.

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, 19834714 + ... + 19843125.

It is an arithmetic number, because the mean of its divisors is an integer number (20890382760).

Almost surely, 2^166884990834 is an apocalyptic number.

166884990834 is an abundant number, since it is smaller than the sum of its proper divisors (167361133326).

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

166884990834 is a wasteful number, since it uses less digits than its factorization.

166884990834 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39678545.

The product of its (nonzero) digits is 71663616, while the sum is 66.

The spelling of 166884990834 in words is "one hundred sixty-six billion, eight hundred eighty-four million, nine hundred ninety thousand, eight hundred thirty-four".