16904047717 has 2 divisors, whose sum is σ = 16904047718. Its totient is φ = 16904047716.

The previous prime is 16904047651. The next prime is 16904047729. The reversal of 16904047717 is 71774040961.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14285269441 + 2618778276 = 119521^2 + 51174^2 .

It is a cyclic number.

It is not a de Polignac number, because 16904047717 - 2¹⁵ = 16904014949 is a prime.

It is a super-2 number, since 2×16904047717² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16904047117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8452023858 + 8452023859.

It is an arithmetic number, because the mean of its divisors is an integer number (8452023859).

Almost surely, 2^16904047717 is an apocalyptic number.

It is an amenable number.

16904047717 is a deficient number, since it is larger than the sum of its proper divisors (1).

16904047717 is an equidigital number, since it uses as much as digits as its factorization.

16904047717 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 296352, while the sum is 46.

The spelling of 16904047717 in words is "sixteen billion, nine hundred four million, forty-seven thousand, seven hundred seventeen".