27087422309 has 2 divisors, whose sum is σ = 27087422310. Its totient is φ = 27087422308.

The previous prime is 27087422291. The next prime is 27087422321. The reversal of 27087422309 is 90322478072.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 22737624100 + 4349798209 = 150790^2 + 65953^2 .

It is a cyclic number.

It is not a de Polignac number, because 27087422309 - 2⁸ = 27087422053 is a prime.

It is a super-2 number, since 2×27087422309² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 27087422309.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27087482309) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13543711154 + 13543711155.

It is an arithmetic number, because the mean of its divisors is an integer number (13543711155).

Almost surely, 2^27087422309 is an apocalyptic number.

It is an amenable number.

27087422309 is a deficient number, since it is larger than the sum of its proper divisors (1).

27087422309 is an equidigital number, since it uses as much as digits as its factorization.

27087422309 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 338688, while the sum is 44.

The spelling of 27087422309 in words is "twenty-seven billion, eighty-seven million, four hundred twenty-two thousand, three hundred nine".