27809451227 has 2 divisors, whose sum is σ = 27809451228. Its totient is φ = 27809451226.

The previous prime is 27809451221. The next prime is 27809451269. The reversal of 27809451227 is 72215490872.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 27809451227 - 2¹⁴ = 27809434843 is a prime.

It is not a weakly prime, because it can be changed into another prime (27809451221) 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, 13904725613 + 13904725614.

It is an arithmetic number, because the mean of its divisors is an integer number (13904725614).

Almost surely, 2^27809451227 is an apocalyptic number.

27809451227 is a deficient number, since it is larger than the sum of its proper divisors (1).

27809451227 is an equidigital number, since it uses as much as digits as its factorization.

27809451227 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 564480, while the sum is 47.

The spelling of 27809451227 in words is "twenty-seven billion, eight hundred nine million, four hundred fifty-one thousand, two hundred twenty-seven".