117315817823 has 16 divisors (see below), whose sum is σ = 120738651264. Its totient is φ = 113906580480.

The previous prime is 117315817811. The next prime is 117315817831. The reversal of 117315817823 is 328718513711.

It is a cyclic number.

It is not a de Polignac number, because 117315817823 - 2¹⁰ = 117315816799 is a prime.

It is a super-2 number, since 2×117315817823² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (117315807823) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 58162511 + ... + 58164527.

It is an arithmetic number, because the mean of its divisors is an integer number (7546165704).

Almost surely, 2^117315817823 is an apocalyptic number.

117315817823 is a deficient number, since it is larger than the sum of its proper divisors (3422833441).

117315817823 is a wasteful number, since it uses less digits than its factorization.

117315817823 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4562.

The product of its digits is 282240, while the sum is 47.

The spelling of 117315817823 in words is "one hundred seventeen billion, three hundred fifteen million, eight hundred seventeen thousand, eight hundred twenty-three".