9717117173 has 2 divisors, whose sum is σ = 9717117174. Its totient is φ = 9717117172.

The previous prime is 9717117143. The next prime is 9717117197. The reversal of 9717117173 is 3717117179.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6540442129 + 3176675044 = 80873^2 + 56362^2 .

It is a cyclic number.

It is not a de Polignac number, because 9717117173 - 2⁸ = 9717116917 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9717117143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4858558586 + 4858558587.

It is an arithmetic number, because the mean of its divisors is an integer number (4858558587).

Almost surely, 2^9717117173 is an apocalyptic number.

It is an amenable number.

9717117173 is a deficient number, since it is larger than the sum of its proper divisors (1).

9717117173 is an equidigital number, since it uses as much as digits as its factorization.

9717117173 is an evil number, because the sum of its binary digits is even.

The product of its digits is 64827, while the sum is 44.

The square root of 9717117173 is about 98575.4389947111. The cubic root of 9717117173 is about 2133.9249760696.

The spelling of 9717117173 in words is "nine billion, seven hundred seventeen million, one hundred seventeen thousand, one hundred seventy-three".