117215615017 has 2 divisors, whose sum is σ = 117215615018. Its totient is φ = 117215615016.

The previous prime is 117215615003. The next prime is 117215615021. The reversal of 117215615017 is 710516512711.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 92307200041 + 24908414976 = 303821^2 + 157824^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-117215615017 is a prime.

It is not a weakly prime, because it can be changed into another prime (117215615317) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 58607807508 + 58607807509.

It is an arithmetic number, because the mean of its divisors is an integer number (58607807509).

Almost surely, 2^117215615017 is an apocalyptic number.

It is an amenable number.

117215615017 is a deficient number, since it is larger than the sum of its proper divisors (1).

117215615017 is an equidigital number, since it uses as much as digits as its factorization.

117215615017 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 14700, while the sum is 37.

The spelling of 117215615017 in words is "one hundred seventeen billion, two hundred fifteen million, six hundred fifteen thousand, seventeen".