27777668467 has 2 divisors, whose sum is σ = 27777668468. Its totient is φ = 27777668466.

The previous prime is 27777668461. The next prime is 27777668497. The reversal of 27777668467 is 76486677772.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 27777668467 - 2³ = 27777668459 is a prime.

It is a super-2 number, since 2×27777668467² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (27777668461) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13888834233 + 13888834234.

It is an arithmetic number, because the mean of its divisors is an integer number (13888834234).

Almost surely, 2^27777668467 is an apocalyptic number.

27777668467 is a deficient number, since it is larger than the sum of its proper divisors (1).

27777668467 is an equidigital number, since it uses as much as digits as its factorization.

27777668467 is an evil number, because the sum of its binary digits is even.

The product of its digits is 232339968, while the sum is 67.

The spelling of 27777668467 in words is "twenty-seven billion, seven hundred seventy-seven million, six hundred sixty-eight thousand, four hundred sixty-seven".