27271042549 has 2 divisors, whose sum is σ = 27271042550. Its totient is φ = 27271042548.

The previous prime is 27271042543. The next prime is 27271042567. The reversal of 27271042549 is 94524017272.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 22917418225 + 4353624324 = 151385^2 + 65982^2 .

It is a cyclic number.

It is not a de Polignac number, because 27271042549 - 2¹⁵ = 27271009781 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27271042543) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13635521274 + 13635521275.

It is an arithmetic number, because the mean of its divisors is an integer number (13635521275).

Almost surely, 2^27271042549 is an apocalyptic number.

It is an amenable number.

27271042549 is a deficient number, since it is larger than the sum of its proper divisors (1).

27271042549 is an equidigital number, since it uses as much as digits as its factorization.

27271042549 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 282240, while the sum is 43.

The spelling of 27271042549 in words is "twenty-seven billion, two hundred seventy-one million, forty-two thousand, five hundred forty-nine".