13617185117 has 2 divisors, whose sum is σ = 13617185118. Its totient is φ = 13617185116.

The previous prime is 13617185111. The next prime is 13617185129. The reversal of 13617185117 is 71158171631.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9184155556 + 4433029561 = 95834^2 + 66581^2 .

It is a cyclic number.

It is not a de Polignac number, because 13617185117 - 2²² = 13612990813 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13617185111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6808592558 + 6808592559.

It is an arithmetic number, because the mean of its divisors is an integer number (6808592559).

Almost surely, 2^13617185117 is an apocalyptic number.

It is an amenable number.

13617185117 is a deficient number, since it is larger than the sum of its proper divisors (1).

13617185117 is an equidigital number, since it uses as much as digits as its factorization.

13617185117 is an evil number, because the sum of its binary digits is even.

The product of its digits is 35280, while the sum is 41.

The spelling of 13617185117 in words is "thirteen billion, six hundred seventeen million, one hundred eighty-five thousand, one hundred seventeen".