27418881349 has 2 divisors, whose sum is σ = 27418881350. Its totient is φ = 27418881348.

The previous prime is 27418881337. The next prime is 27418881353. The reversal of 27418881349 is 94318881472.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 23159361124 + 4259520225 = 152182^2 + 65265^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-27418881349 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 27418881349.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27418881649) 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, 13709440674 + 13709440675.

It is an arithmetic number, because the mean of its divisors is an integer number (13709440675).

Almost surely, 2^27418881349 is an apocalyptic number.

It is an amenable number.

27418881349 is a deficient number, since it is larger than the sum of its proper divisors (1).

27418881349 is an equidigital number, since it uses as much as digits as its factorization.

27418881349 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3096576, while the sum is 55.

The spelling of 27418881349 in words is "twenty-seven billion, four hundred eighteen million, eight hundred eighty-one thousand, three hundred forty-nine".