27261882449 has 2 divisors, whose sum is σ = 27261882450. Its totient is φ = 27261882448.

The previous prime is 27261882443. The next prime is 27261882521. The reversal of 27261882449 is 94428816272.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 26339667025 + 922215424 = 162295^2 + 30368^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-27261882449 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 27261882449.

It is not a weakly prime, because it can be changed into another prime (27261882443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13630941224 + 13630941225.

It is an arithmetic number, because the mean of its divisors is an integer number (13630941225).

Almost surely, 2^27261882449 is an apocalyptic number.

It is an amenable number.

27261882449 is a deficient number, since it is larger than the sum of its proper divisors (1).

27261882449 is an equidigital number, since it uses as much as digits as its factorization.

27261882449 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3096576, while the sum is 53.

The spelling of 27261882449 in words is "twenty-seven billion, two hundred sixty-one million, eight hundred eighty-two thousand, four hundred forty-nine".