27166818113 has 2 divisors, whose sum is σ = 27166818114. Its totient is φ = 27166818112.

The previous prime is 27166818109. The next prime is 27166818221. The reversal of 27166818113 is 31181866172.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19707386689 + 7459431424 = 140383^2 + 86368^2 .

It is a cyclic number.

It is not a de Polignac number, because 27166818113 - 2² = 27166818109 is a prime.

It is not a weakly prime, because it can be changed into another prime (27166898113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13583409056 + 13583409057.

It is an arithmetic number, because the mean of its divisors is an integer number (13583409057).

Almost surely, 2^27166818113 is an apocalyptic number.

It is an amenable number.

27166818113 is a deficient number, since it is larger than the sum of its proper divisors (1).

27166818113 is an equidigital number, since it uses as much as digits as its factorization.

27166818113 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 96768, while the sum is 44.

The spelling of 27166818113 in words is "twenty-seven billion, one hundred sixty-six million, eight hundred eighteen thousand, one hundred thirteen".