17117186917 has 2 divisors, whose sum is σ = 17117186918. Its totient is φ = 17117186916.

The previous prime is 17117186903. The next prime is 17117186953. The reversal of 17117186917 is 71968171171.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12551617156 + 4565569761 = 112034^2 + 67569^2 .

It is a cyclic number.

It is not a de Polignac number, because 17117186917 - 2²³ = 17108798309 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (17117166917) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8558593458 + 8558593459.

It is an arithmetic number, because the mean of its divisors is an integer number (8558593459).

Almost surely, 2^17117186917 is an apocalyptic number.

It is an amenable number.

17117186917 is a deficient number, since it is larger than the sum of its proper divisors (1).

17117186917 is an equidigital number, since it uses as much as digits as its factorization.

17117186917 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 148176, while the sum is 49.

The spelling of 17117186917 in words is "seventeen billion, one hundred seventeen million, one hundred eighty-six thousand, nine hundred seventeen".