27922839491 has 2 divisors, whose sum is σ = 27922839492. Its totient is φ = 27922839490.

The previous prime is 27922839479. The next prime is 27922839563. The reversal of 27922839491 is 19493822972.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 27922839491 - 2³⁴ = 10742970307 is a prime.

It is not a weakly prime, because it can be changed into another prime (27922830491) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13961419745 + 13961419746.

It is an arithmetic number, because the mean of its divisors is an integer number (13961419746).

Almost surely, 2^27922839491 is an apocalyptic number.

27922839491 is a deficient number, since it is larger than the sum of its proper divisors (1).

27922839491 is an equidigital number, since it uses as much as digits as its factorization.

27922839491 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3919104, while the sum is 56.

The spelling of 27922839491 in words is "twenty-seven billion, nine hundred twenty-two million, eight hundred thirty-nine thousand, four hundred ninety-one".