27766206113 has 2 divisors, whose sum is σ = 27766206114. Its totient is φ = 27766206112.

The previous prime is 27766206067. The next prime is 27766206133. The reversal of 27766206113 is 31160266772.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15553082944 + 12213123169 = 124712^2 + 110513^2 .

It is a cyclic number.

It is not a de Polignac number, because 27766206113 - 2¹⁸ = 27765943969 is a prime.

It is not a weakly prime, because it can be changed into another prime (27766206133) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13883103056 + 13883103057.

It is an arithmetic number, because the mean of its divisors is an integer number (13883103057).

Almost surely, 2^27766206113 is an apocalyptic number.

It is an amenable number.

27766206113 is a deficient number, since it is larger than the sum of its proper divisors (1).

27766206113 is an equidigital number, since it uses as much as digits as its factorization.

27766206113 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 127008, while the sum is 41.

The spelling of 27766206113 in words is "twenty-seven billion, seven hundred sixty-six million, two hundred six thousand, one hundred thirteen".