117731417879 has 2 divisors, whose sum is σ = 117731417880. Its totient is φ = 117731417878.

The previous prime is 117731417873. The next prime is 117731417957. The reversal of 117731417879 is 978714137711.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-117731417879 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (117731417873) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 58865708939 + 58865708940.

It is an arithmetic number, because the mean of its divisors is an integer number (58865708940).

Almost surely, 2^117731417879 is an apocalyptic number.

117731417879 is a deficient number, since it is larger than the sum of its proper divisors (1).

117731417879 is an equidigital number, since it uses as much as digits as its factorization.

117731417879 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2074464, while the sum is 56.

The spelling of 117731417879 in words is "one hundred seventeen billion, seven hundred thirty-one million, four hundred seventeen thousand, eight hundred seventy-nine".