27422558081 has 2 divisors, whose sum is σ = 27422558082. Its totient is φ = 27422558080.

The previous prime is 27422558077. The next prime is 27422558083. The reversal of 27422558081 is 18085522472.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 25797178225 + 1625379856 = 160615^2 + 40316^2 .

It is a cyclic number.

It is not a de Polignac number, because 27422558081 - 2² = 27422558077 is a prime.

It is a super-2 number, since 2×27422558081² (a number of 22 digits) contains 22 as substring.

Together with 27422558083, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (27422558083) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13711279040 + 13711279041.

It is an arithmetic number, because the mean of its divisors is an integer number (13711279041).

Almost surely, 2^27422558081 is an apocalyptic number.

It is an amenable number.

27422558081 is a deficient number, since it is larger than the sum of its proper divisors (1).

27422558081 is an equidigital number, since it uses as much as digits as its factorization.

27422558081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 358400, while the sum is 44.

The spelling of 27422558081 in words is "twenty-seven billion, four hundred twenty-two million, five hundred fifty-eight thousand, eighty-one".