118517968291 has 2 divisors, whose sum is σ = 118517968292. Its totient is φ = 118517968290.

The previous prime is 118517968223. The next prime is 118517968319. The reversal of 118517968291 is 192869715811.

It is a strong prime.

It is an emirp because it is prime and its reverse (192869715811) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 118517968291 - 2³⁵ = 84158229923 is a prime.

It is not a weakly prime, because it can be changed into another prime (118517938291) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 59258984145 + 59258984146.

It is an arithmetic number, because the mean of its divisors is an integer number (59258984146).

Almost surely, 2^118517968291 is an apocalyptic number.

118517968291 is a deficient number, since it is larger than the sum of its proper divisors (1).

118517968291 is an equidigital number, since it uses as much as digits as its factorization.

118517968291 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2177280, while the sum is 58.

The spelling of 118517968291 in words is "one hundred eighteen billion, five hundred seventeen million, nine hundred sixty-eight thousand, two hundred ninety-one".