27281231027 has 2 divisors, whose sum is σ = 27281231028. Its totient is φ = 27281231026.

The previous prime is 27281231009. The next prime is 27281231059. The reversal of 27281231027 is 72013218272.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 27281231027 - 2⁸ = 27281230771 is a prime.

It is not a weakly prime, because it can be changed into another prime (27281231927) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13640615513 + 13640615514.

It is an arithmetic number, because the mean of its divisors is an integer number (13640615514).

Almost surely, 2^27281231027 is an apocalyptic number.

27281231027 is a deficient number, since it is larger than the sum of its proper divisors (1).

27281231027 is an equidigital number, since it uses as much as digits as its factorization.

27281231027 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18816, while the sum is 35.

Adding to 27281231027 its reverse (72013218272), we get a palindrome (99294449299).

The spelling of 27281231027 in words is "twenty-seven billion, two hundred eighty-one million, two hundred thirty-one thousand, twenty-seven".