27366366109 has 2 divisors, whose sum is σ = 27366366110. Its totient is φ = 27366366108.

The previous prime is 27366366061. The next prime is 27366366151. The reversal of 27366366109 is 90166366372.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19859010084 + 7507356025 = 140922^2 + 86645^2 .

It is a cyclic number.

It is not a de Polignac number, because 27366366109 - 2²¹ = 27364268957 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27366366179) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13683183054 + 13683183055.

It is an arithmetic number, because the mean of its divisors is an integer number (13683183055).

Almost surely, 2^27366366109 is an apocalyptic number.

It is an amenable number.

27366366109 is a deficient number, since it is larger than the sum of its proper divisors (1).

27366366109 is an equidigital number, since it uses as much as digits as its factorization.

27366366109 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1469664, while the sum is 49.

The spelling of 27366366109 in words is "twenty-seven billion, three hundred sixty-six million, three hundred sixty-six thousand, one hundred nine".