16904047679 has 4 divisors (see below), whose sum is σ = 16904936976. Its totient is φ = 16903158384.

The previous prime is 16904047651. The next prime is 16904047717. The reversal of 16904047679 is 97674040961.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 97674040961 = 7 ⋅13953434423.

It is a cyclic number.

It is not a de Polignac number, because 16904047679 - 2¹⁶ = 16903982143 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 16904047679.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16904047649) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 415499 + ... + 454364.

It is an arithmetic number, because the mean of its divisors is an integer number (4226234244).

Almost surely, 2^16904047679 is an apocalyptic number.

16904047679 is a deficient number, since it is larger than the sum of its proper divisors (889297).

16904047679 is an equidigital number, since it uses as much as digits as its factorization.

16904047679 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 889296.

The product of its (nonzero) digits is 2286144, while the sum is 53.

The spelling of 16904047679 in words is "sixteen billion, nine hundred four million, forty-seven thousand, six hundred seventy-nine".