117789516839 has 4 divisors (see below), whose sum is σ = 117790380240. Its totient is φ = 117788653440.

The previous prime is 117789516799. The next prime is 117789516857. The reversal of 117789516839 is 938615987711.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 117789516839 - 2⁸ = 117789516583 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (117789516869) 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, 176954 + ... + 516615.

It is an arithmetic number, because the mean of its divisors is an integer number (29447595060).

Almost surely, 2^117789516839 is an apocalyptic number.

117789516839 is a deficient number, since it is larger than the sum of its proper divisors (863401).

117789516839 is an equidigital number, since it uses as much as digits as its factorization.

117789516839 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 863400.

The product of its digits is 22861440, while the sum is 65.

The spelling of 117789516839 in words is "one hundred seventeen billion, seven hundred eighty-nine million, five hundred sixteen thousand, eight hundred thirty-nine".