117817365389 has 2 divisors, whose sum is σ = 117817365390. Its totient is φ = 117817365388.

The previous prime is 117817365383. The next prime is 117817365401. The reversal of 117817365389 is 983563718711.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 104739613225 + 13077752164 = 323635^2 + 114358^2 .

It is a cyclic number.

It is not a de Polignac number, because 117817365389 - 2²⁴ = 117800588173 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (117817365383) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 58908682694 + 58908682695.

It is an arithmetic number, because the mean of its divisors is an integer number (58908682695).

Almost surely, 2^117817365389 is an apocalyptic number.

It is an amenable number.

117817365389 is a deficient number, since it is larger than the sum of its proper divisors (1).

117817365389 is an equidigital number, since it uses as much as digits as its factorization.

117817365389 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7620480, while the sum is 59.

The spelling of 117817365389 in words is "one hundred seventeen billion, eight hundred seventeen million, three hundred sixty-five thousand, three hundred eighty-nine".