117471393081 has 81 divisors (see below), whose sum is σ = 208562097861. Its totient is φ = 63519504048.

The previous prime is 117471393071. The next prime is 117471393103. The reversal of 117471393081 is 180393174711.

The square root of 117471393081 is 342741.

It is a perfect power (a square), and thus also a powerful number.

117471393081 is a `hidden beast` number, since 1 + 17 + 471 + 3 + 93 + 0 + 81 = 666.

It is not a de Polignac number, because 117471393081 - 2⁵ = 117471393049 is a prime.

It is a super-2 number, since 2×117471393081² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (117471393041) by changing a digit.

It is a polite number, since it can be written in 80 ways as a sum of consecutive naturals, for example, 136753230 + ... + 136754088.

Almost surely, 2^117471393081 is an apocalyptic number.

117471393081 is the 342741-st square number.

117471393081 is the 171371-st centered octagonal number.

It is an amenable number.

117471393081 is a deficient number, since it is larger than the sum of its proper divisors (91090704780).

117471393081 is an frugal number, since it uses more digits than its factorization.

117471393081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1776 (or 888 counting only the distinct ones).

The product of its (nonzero) digits is 127008, while the sum is 45.

The spelling of 117471393081 in words is "one hundred seventeen billion, four hundred seventy-one million, three hundred ninety-three thousand, eighty-one".