117165512173 has 4 divisors (see below), whose sum is σ = 119376182268. Its totient is φ = 114954842080.

The previous prime is 117165512159. The next prime is 117165512197. The reversal of 117165512173 is 371215561711.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 371215561711 = 251 ⋅1478946461.

It can be written as a sum of positive squares in 2 ways, for example, as 51212595204 + 65952916969 = 226302^2 + 256813^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-117165512173 is a prime.

It is a super-2 number, since 2×117165512173² (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 (117165512143) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1105334968 + ... + 1105335073.

It is an arithmetic number, because the mean of its divisors is an integer number (29844045567).

Almost surely, 2^117165512173 is an apocalyptic number.

It is an amenable number.

117165512173 is a deficient number, since it is larger than the sum of its proper divisors (2210670095).

117165512173 is an equidigital number, since it uses as much as digits as its factorization.

117165512173 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2210670094.

The product of its digits is 44100, while the sum is 40.

The spelling of 117165512173 in words is "one hundred seventeen billion, one hundred sixty-five million, five hundred twelve thousand, one hundred seventy-three".