27120732690269 has 2 divisors, whose sum is σ = 27120732690270. Its totient is φ = 27120732690268.

The previous prime is 27120732690239. The next prime is 27120732690277. The reversal of 27120732690269 is 96209623702172.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18743401303225 + 8377331387044 = 4329365^2 + 2894362^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-27120732690269 is a prime.

It is a super-2 number, since 2×27120732690269² (a number of 28 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27120732690209) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13560366345134 + 13560366345135.

It is an arithmetic number, because the mean of its divisors is an integer number (13560366345135).

Almost surely, 2^{27120732690269} is an apocalyptic number.

It is an amenable number.

27120732690269 is a deficient number, since it is larger than the sum of its proper divisors (1).

27120732690269 is an equidigital number, since it uses as much as digits as its factorization.

27120732690269 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6858432, while the sum is 56.

The spelling of 27120732690269 in words is "twenty-seven trillion, one hundred twenty billion, seven hundred thirty-two million, six hundred ninety thousand, two hundred sixty-nine".