27088380509 has 2 divisors, whose sum is σ = 27088380510. Its totient is φ = 27088380508.

The previous prime is 27088380493. The next prime is 27088380521. The reversal of 27088380509 is 90508388072.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 24334440025 + 2753940484 = 155995^2 + 52478^2 .

It is a cyclic number.

It is not a de Polignac number, because 27088380509 - 2⁴ = 27088380493 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27088380559) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13544190254 + 13544190255.

It is an arithmetic number, because the mean of its divisors is an integer number (13544190255).

Almost surely, 2^27088380509 is an apocalyptic number.

It is an amenable number.

27088380509 is a deficient number, since it is larger than the sum of its proper divisors (1).

27088380509 is an equidigital number, since it uses as much as digits as its factorization.

27088380509 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 967680, while the sum is 50.

The spelling of 27088380509 in words is "twenty-seven billion, eighty-eight million, three hundred eighty thousand, five hundred nine".