27777264859 has 2 divisors, whose sum is σ = 27777264860. Its totient is φ = 27777264858.

The previous prime is 27777264763. The next prime is 27777264863. The reversal of 27777264859 is 95846277772.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 27777264859 - 2²³ = 27768876251 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 27777264859.

It is not a weakly prime, because it can be changed into another prime (27777264899) 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, 13888632429 + 13888632430.

It is an arithmetic number, because the mean of its divisors is an integer number (13888632430).

Almost surely, 2^27777264859 is an apocalyptic number.

27777264859 is a deficient number, since it is larger than the sum of its proper divisors (1).

27777264859 is an equidigital number, since it uses as much as digits as its factorization.

27777264859 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 82978560, while the sum is 64.

The spelling of 27777264859 in words is "twenty-seven billion, seven hundred seventy-seven million, two hundred sixty-four thousand, eight hundred fifty-nine".