117171737845 has 16 divisors (see below), whose sum is σ = 142410504960. Its totient is φ = 92534854464.

The previous prime is 117171737833. The next prime is 117171737861. The reversal of 117171737845 is 548737171711.

It is a cyclic number.

It is not a de Polignac number, because 117171737845 - 2³⁵ = 82811999477 is a prime.

It is a super-2 number, since 2×117171737845² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 117171737792 and 117171737801.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2605642 + ... + 2650228.

It is an arithmetic number, because the mean of its divisors is an integer number (8900656560).

Almost surely, 2^117171737845 is an apocalyptic number.

It is an amenable number.

117171737845 is a deficient number, since it is larger than the sum of its proper divisors (25238767115).

117171737845 is an equidigital number, since it uses as much as digits as its factorization.

117171737845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51324.

The product of its digits is 1152480, while the sum is 52.

The spelling of 117171737845 in words is "one hundred seventeen billion, one hundred seventy-one million, seven hundred thirty-seven thousand, eight hundred forty-five".