117153865 has 4 divisors (see below), whose sum is σ = 140584644. Its totient is φ = 93723088.

The previous prime is 117153859. The next prime is 117153893. The reversal of 117153865 is 568351711.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 59028489 + 58125376 = 7683^2 + 7624^2 .

It is a cyclic number.

It is not a de Polignac number, because 117153865 - 2³ = 117153857 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11715382 + ... + 11715391.

It is an arithmetic number, because the mean of its divisors is an integer number (35146161).

Almost surely, 2^117153865 is an apocalyptic number.

It is an amenable number.

117153865 is a deficient number, since it is larger than the sum of its proper divisors (23430779).

117153865 is an equidigital number, since it uses as much as digits as its factorization.

117153865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23430778.

The product of its digits is 25200, while the sum is 37.

The square root of 117153865 is about 10823.7639017118. The cubic root of 117153865 is about 489.3116323290.

The spelling of 117153865 in words is "one hundred seventeen million, one hundred fifty-three thousand, eight hundred sixty-five".