117394631641 has 9 divisors (see below), whose sum is σ = 136563892149. Its totient is φ = 100621914204.

The previous prime is 117394631623. The next prime is 117394631681. The reversal of 117394631641 is 146136493711.

The square root of 117394631641 is 342629.

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

It is not a de Polignac number, because 117394631641 - 2⁷ = 117394631513 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 117394631591 and 117394631600.

It is not an unprimeable number, because it can be changed into a prime (117394631611) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 2373930 + ... + 2422876.

Almost surely, 2^117394631641 is an apocalyptic number.

117394631641 is the 342629-th square number.

117394631641 is the 171315-th centered octagonal number.

It is an amenable number.

117394631641 is a deficient number, since it is larger than the sum of its proper divisors (19169260508).

117394631641 is an frugal number, since it uses more digits than its factorization.

117394631641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97908 (or 48954 counting only the distinct ones).

The product of its digits is 326592, while the sum is 46.

The spelling of 117394631641 in words is "one hundred seventeen billion, three hundred ninety-four million, six hundred thirty-one thousand, six hundred forty-one".