111517813808179 has 2 divisors, whose sum is σ = 111517813808180. Its totient is φ = 111517813808178.

The previous prime is 111517813808171. The next prime is 111517813808183. The reversal of 111517813808179 is 971808318715111.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 111517813808179 - 2³ = 111517813808171 is a prime.

It is not a weakly prime, because it can be changed into another prime (111517813808171) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55758906904089 + 55758906904090.

It is an arithmetic number, because the mean of its divisors is an integer number (55758906904090).

Almost surely, 2^{111517813808179} is an apocalyptic number.

111517813808179 is a deficient number, since it is larger than the sum of its proper divisors (1).

111517813808179 is an equidigital number, since it uses as much as digits as its factorization.

111517813808179 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3386880, while the sum is 61.

The spelling of 111517813808179 in words is "one hundred eleven trillion, five hundred seventeen billion, eight hundred thirteen million, eight hundred eight thousand, one hundred seventy-nine".