27667642423 has 2 divisors, whose sum is σ = 27667642424. Its totient is φ = 27667642422.

The previous prime is 27667642411. The next prime is 27667642447. The reversal of 27667642423 is 32424676672.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 27667642423 - 2²⁹ = 27130771511 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27667642463) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13833821211 + 13833821212.

It is an arithmetic number, because the mean of its divisors is an integer number (13833821212).

Almost surely, 2^27667642423 is an apocalyptic number.

27667642423 is a deficient number, since it is larger than the sum of its proper divisors (1).

27667642423 is an equidigital number, since it uses as much as digits as its factorization.

27667642423 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4064256, while the sum is 49.

The spelling of 27667642423 in words is "twenty-seven billion, six hundred sixty-seven million, six hundred forty-two thousand, four hundred twenty-three".