16904047680 has 672 divisors, whose sum is σ = 68369078400. Its totient is φ = 3897704448.

The previous prime is 16904047651. The next prime is 16904047717. The reversal of 16904047680 is 8674040961.

16904047680 is a `hidden beast` number, since 1 + 69 + 0 + 40 + 476 + 80 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 189933076 + ... + 189933164.

It is an arithmetic number, because the mean of its divisors is an integer number (101739700).

Almost surely, 2^16904047680 is an apocalyptic number.

16904047680 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 16904047680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34184539200).

16904047680 is an abundant number, since it is smaller than the sum of its proper divisors (51465030720).

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

16904047680 is a wasteful number, since it uses less digits than its factorization.

16904047680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 236 (or 131 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 45.

The spelling of 16904047680 in words is "sixteen billion, nine hundred four million, forty-seven thousand, six hundred eighty".