16904135808 has 256 divisors, whose sum is σ = 58234982400. Its totient is φ = 4726674432.

The previous prime is 16904135779. The next prime is 16904135813. The reversal of 16904135808 is 80853140961.

16904135808 is a `hidden beast` number, since 1 + 69 + 0 + 4 + 1 + 3 + 580 + 8 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1129591 + ... + 1144457.

It is an arithmetic number, because the mean of its divisors is an integer number (227480400).

Almost surely, 2^16904135808 is an apocalyptic number.

16904135808 is a gapful number since it is divisible by the number (18) 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 16904135808, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29117491200).

16904135808 is an abundant number, since it is smaller than the sum of its proper divisors (41330846592).

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

16904135808 is a wasteful number, since it uses less digits than its factorization.

16904135808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14944 (or 14926 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 45.

The spelling of 16904135808 in words is "sixteen billion, nine hundred four million, one hundred thirty-five thousand, eight hundred eight".