17117186953 has 2 divisors, whose sum is σ = 17117186954. Its totient is φ = 17117186952.

The previous prime is 17117186917. The next prime is 17117186993. The reversal of 17117186953 is 35968171171.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16208345344 + 908841609 = 127312^2 + 30147^2 .

It is a cyclic number.

It is not a de Polignac number, because 17117186953 - 2³³ = 8527252361 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 17117186897 and 17117186906.

It is not a weakly prime, because it can be changed into another prime (17117186903) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8558593476 + 8558593477.

It is an arithmetic number, because the mean of its divisors is an integer number (8558593477).

Almost surely, 2^17117186953 is an apocalyptic number.

It is an amenable number.

17117186953 is a deficient number, since it is larger than the sum of its proper divisors (1).

17117186953 is an equidigital number, since it uses as much as digits as its factorization.

17117186953 is an evil number, because the sum of its binary digits is even.

The product of its digits is 317520, while the sum is 49.

The spelling of 17117186953 in words is "seventeen billion, one hundred seventeen million, one hundred eighty-six thousand, nine hundred fifty-three".