17616669149 has 2 divisors, whose sum is σ = 17616669150. Its totient is φ = 17616669148.

The previous prime is 17616669143. The next prime is 17616669157. The reversal of 17616669149 is 94196661671.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13428637924 + 4188031225 = 115882^2 + 64715^2 .

It is a cyclic number.

It is not a de Polignac number, because 17616669149 - 2²⁰ = 17615620573 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 17616669094 and 17616669103.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (17616669143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8808334574 + 8808334575.

It is an arithmetic number, because the mean of its divisors is an integer number (8808334575).

Almost surely, 2^17616669149 is an apocalyptic number.

It is an amenable number.

17616669149 is a deficient number, since it is larger than the sum of its proper divisors (1).

17616669149 is an equidigital number, since it uses as much as digits as its factorization.

17616669149 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2939328, while the sum is 56.

The spelling of 17616669149 in words is "seventeen billion, six hundred sixteen million, six hundred sixty-nine thousand, one hundred forty-nine".