17117672917 has 2 divisors, whose sum is σ = 17117672918. Its totient is φ = 17117672916.

The previous prime is 17117672893. The next prime is 17117672921. The reversal of 17117672917 is 71927671171.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16953602436 + 164070481 = 130206^2 + 12809^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-17117672917 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (17117672947) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8558836458 + 8558836459.

It is an arithmetic number, because the mean of its divisors is an integer number (8558836459).

Almost surely, 2^17117672917 is an apocalyptic number.

It is an amenable number.

17117672917 is a deficient number, since it is larger than the sum of its proper divisors (1).

17117672917 is an equidigital number, since it uses as much as digits as its factorization.

17117672917 is an evil number, because the sum of its binary digits is even.

The product of its digits is 259308, while the sum is 49.

The spelling of 17117672917 in words is "seventeen billion, one hundred seventeen million, six hundred seventy-two thousand, nine hundred seventeen".