27256693133 has 2 divisors, whose sum is σ = 27256693134. Its totient is φ = 27256693132.

The previous prime is 27256693039. The next prime is 27256693157. The reversal of 27256693133 is 33139665272.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 24160660969 + 3096032164 = 155437^2 + 55642^2 .

It is a cyclic number.

It is not a de Polignac number, because 27256693133 - 2³² = 22961725837 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27256693183) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13628346566 + 13628346567.

It is an arithmetic number, because the mean of its divisors is an integer number (13628346567).

Almost surely, 2^27256693133 is an apocalyptic number.

It is an amenable number.

27256693133 is a deficient number, since it is larger than the sum of its proper divisors (1).

27256693133 is an equidigital number, since it uses as much as digits as its factorization.

27256693133 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1224720, while the sum is 47.

The spelling of 27256693133 in words is "twenty-seven billion, two hundred fifty-six million, six hundred ninety-three thousand, one hundred thirty-three".