27312697981279 has 2 divisors, whose sum is σ = 27312697981280. Its totient is φ = 27312697981278.

The previous prime is 27312697981237. The next prime is 27312697981307. The reversal of 27312697981279 is 97218979621372.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 27312697981279 - 2⁹ = 27312697980767 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27312697987279) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13656348990639 + 13656348990640.

It is an arithmetic number, because the mean of its divisors is an integer number (13656348990640).

Almost surely, 2^{27312697981279} is an apocalyptic number.

27312697981279 is a deficient number, since it is larger than the sum of its proper divisors (1).

27312697981279 is an equidigital number, since it uses as much as digits as its factorization.

27312697981279 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 288054144, while the sum is 73.

The spelling of 27312697981279 in words is "twenty-seven trillion, three hundred twelve billion, six hundred ninety-seven million, nine hundred eighty-one thousand, two hundred seventy-nine".