16717714209 has 81 divisors (see below), whose sum is σ = 28921453041. Its totient is φ = 9278352720.

The previous prime is 16717714199. The next prime is 16717714219. The reversal of 16717714209 is 90241771761.

The square root of 16717714209 is 129297.

It is a perfect power (a square), and thus also a powerful number.

It is an interprime number because it is at equal distance from previous prime (16717714199) and next prime (16717714219).

It is not a de Polignac number, because 16717714209 - 2⁵ = 16717714177 is a prime.

It is not an unprimeable number, because it can be changed into a prime (16717714219) by changing a digit.

It is a polite number, since it can be written in 80 ways as a sum of consecutive naturals, for example, 127616074 + ... + 127616204.

Almost surely, 2^16717714209 is an apocalyptic number.

16717714209 is the 129297-th square number.

16717714209 is the 64649-th centered octagonal number.

It is an amenable number.

16717714209 is a deficient number, since it is larger than the sum of its proper divisors (12203738832).

16717714209 is an equidigital number, since it uses as much as digits as its factorization.

16717714209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 376 (or 188 counting only the distinct ones).

The product of its (nonzero) digits is 148176, while the sum is 45.

The spelling of 16717714209 in words is "sixteen billion, seven hundred seventeen million, seven hundred fourteen thousand, two hundred nine".