27002774509 has 2 divisors, whose sum is σ = 27002774510. Its totient is φ = 27002774508.

The previous prime is 27002774507. The next prime is 27002774609. The reversal of 27002774509 is 90547720072.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 21543781284 + 5458993225 = 146778^2 + 73885^2 .

It is a cyclic number.

It is not a de Polignac number, because 27002774509 - 2¹ = 27002774507 is a prime.

Together with 27002774507, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27002774507) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13501387254 + 13501387255.

It is an arithmetic number, because the mean of its divisors is an integer number (13501387255).

Almost surely, 2^27002774509 is an apocalyptic number.

It is an amenable number.

27002774509 is a deficient number, since it is larger than the sum of its proper divisors (1).

27002774509 is an equidigital number, since it uses as much as digits as its factorization.

27002774509 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 246960, while the sum is 43.

The spelling of 27002774509 in words is "twenty-seven billion, two million, seven hundred seventy-four thousand, five hundred nine".