111117166136189 has 2 divisors, whose sum is σ = 111117166136190. Its totient is φ = 111117166136188.

The previous prime is 111117166136183. The next prime is 111117166136269. The reversal of 111117166136189 is 981631661711111.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 59369213240164 + 51747952896025 = 7705142^2 + 7193605^2 .

It is a cyclic number.

It is not a de Polignac number, because 111117166136189 - 2³⁶ = 111048446659453 is a prime.

It is a super-3 number, since 3×111117166136189³ (a number of 43 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a self number, because there is not a number n which added to its sum of digits gives 111117166136189.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111117166136183) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55558583068094 + 55558583068095.

It is an arithmetic number, because the mean of its divisors is an integer number (55558583068095).

Almost surely, 2^{111117166136189} is an apocalyptic number.

It is an amenable number.

111117166136189 is a deficient number, since it is larger than the sum of its proper divisors (1).

111117166136189 is an equidigital number, since it uses as much as digits as its factorization.

111117166136189 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 326592, while the sum is 53.

The spelling of 111117166136189 in words is "one hundred eleven trillion, one hundred seventeen billion, one hundred sixty-six million, one hundred thirty-six thousand, one hundred eighty-nine".