115111911613 has 2 divisors, whose sum is σ = 115111911614. Its totient is φ = 115111911612.

The previous prime is 115111911571. The next prime is 115111911617. The reversal of 115111911613 is 316119111511.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 71458913124 + 43652998489 = 267318^2 + 208933^2 .

It is a cyclic number.

It is not a de Polignac number, because 115111911613 - 2¹⁷ = 115111780541 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (115111911617) 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, 57555955806 + 57555955807.

It is an arithmetic number, because the mean of its divisors is an integer number (57555955807).

Almost surely, 2^115111911613 is an apocalyptic number.

It is an amenable number.

115111911613 is a deficient number, since it is larger than the sum of its proper divisors (1).

115111911613 is an equidigital number, since it uses as much as digits as its factorization.

115111911613 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 810, while the sum is 31.

The spelling of 115111911613 in words is "one hundred fifteen billion, one hundred eleven million, nine hundred eleven thousand, six hundred thirteen".