117910943881 has 4 divisors (see below), whose sum is σ = 117911745792. Its totient is φ = 117910141972.

The previous prime is 117910943809. The next prime is 117910943897. The reversal of 117910943881 is 188349019711.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-117910943881 is a prime.

It is a super-2 number, since 2×117910943881² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (117950943881) 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, 110041 + ... + 497926.

It is an arithmetic number, because the mean of its divisors is an integer number (29477936448).

Almost surely, 2^117910943881 is an apocalyptic number.

It is an amenable number.

117910943881 is a deficient number, since it is larger than the sum of its proper divisors (801911).

117910943881 is an equidigital number, since it uses as much as digits as its factorization.

117910943881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 801910.

The product of its (nonzero) digits is 435456, while the sum is 52.

The spelling of 117910943881 in words is "one hundred seventeen billion, nine hundred ten million, nine hundred forty-three thousand, eight hundred eighty-one".