16805552858 has 12 divisors (see below), whose sum is σ = 26604913770. Its totient is φ = 7960524696.

The previous prime is 16805552837. The next prime is 16805552909. The reversal of 16805552858 is 85825550861.

It can be written as a sum of positive squares in only one way, i.e., 9341802409 + 7463750449 = 96653^2 + 86393^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 11637473 + ... + 11638916.

Almost surely, 2^16805552858 is an apocalyptic number.

16805552858 is a deficient number, since it is larger than the sum of its proper divisors (9799360912).

16805552858 is a wasteful number, since it uses less digits than its factorization.

16805552858 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23276429 (or 23276410 counting only the distinct ones).

The product of its (nonzero) digits is 3840000, while the sum is 53.

The spelling of 16805552858 in words is "sixteen billion, eight hundred five million, five hundred fifty-two thousand, eight hundred fifty-eight".