27565361339 has 2 divisors, whose sum is σ = 27565361340. Its totient is φ = 27565361338.

The previous prime is 27565361279. The next prime is 27565361357. The reversal of 27565361339 is 93316356572.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 27565361339 - 2¹⁶ = 27565295803 is a prime.

It is not a weakly prime, because it can be changed into another prime (27565361359) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13782680669 + 13782680670.

It is an arithmetic number, because the mean of its divisors is an integer number (13782680670).

Almost surely, 2^27565361339 is an apocalyptic number.

27565361339 is a deficient number, since it is larger than the sum of its proper divisors (1).

27565361339 is an equidigital number, since it uses as much as digits as its factorization.

27565361339 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3061800, while the sum is 50.

The spelling of 27565361339 in words is "twenty-seven billion, five hundred sixty-five million, three hundred sixty-one thousand, three hundred thirty-nine".