117543161081 has 8 divisors (see below), whose sum is σ = 124470500040. Its totient is φ = 110617270528.

The previous prime is 117543161017. The next prime is 117543161143. The reversal of 117543161081 is 180161345711.

It can be written as a sum of positive squares in 4 ways, for example, as 83287074025 + 34256087056 = 288595^2 + 185084^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 117543161081 - 2⁶ = 117543161017 is a prime.

It is a super-2 number, since 2×117543161081² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (117543161011) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 192746 + ... + 521763.

It is an arithmetic number, because the mean of its divisors is an integer number (15558812505).

Almost surely, 2^117543161081 is an apocalyptic number.

It is an amenable number.

117543161081 is a deficient number, since it is larger than the sum of its proper divisors (6927338959).

117543161081 is an equidigital number, since it uses as much as digits as its factorization.

117543161081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 724203.

The product of its (nonzero) digits is 20160, while the sum is 38.

The spelling of 117543161081 in words is "one hundred seventeen billion, five hundred forty-three million, one hundred sixty-one thousand, eighty-one".