16904774840 has 64 divisors (see below), whose sum is σ = 40319013600. Its totient is φ = 6356901888.

The previous prime is 16904774833. The next prime is 16904774863. The reversal of 16904774840 is 4847740961.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 603056 + ... + 630464.

Almost surely, 2^16904774840 is an apocalyptic number.

16904774840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16904774840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20159506800).

16904774840 is an abundant number, since it is smaller than the sum of its proper divisors (23414238760).

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

16904774840 is a wasteful number, since it uses less digits than its factorization.

16904774840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28344 (or 28340 counting only the distinct ones).

The product of its (nonzero) digits is 1354752, while the sum is 50.

The spelling of 16904774840 in words is "sixteen billion, nine hundred four million, seven hundred seventy-four thousand, eight hundred forty".