27088947689 has 2 divisors, whose sum is σ = 27088947690. Its totient is φ = 27088947688.

The previous prime is 27088947667. The next prime is 27088947701. The reversal of 27088947689 is 98674988072.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 17717739664 + 9371208025 = 133108^2 + 96805^2 .

It is a cyclic number.

It is not a de Polignac number, because 27088947689 - 2¹² = 27088943593 is a prime.

It is a super-2 number, since 2×27088947689² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (27088947089) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13544473844 + 13544473845.

It is an arithmetic number, because the mean of its divisors is an integer number (13544473845).

Almost surely, 2^27088947689 is an apocalyptic number.

It is an amenable number.

27088947689 is a deficient number, since it is larger than the sum of its proper divisors (1).

27088947689 is an equidigital number, since it uses as much as digits as its factorization.

27088947689 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 97542144, while the sum is 68.

The spelling of 27088947689 in words is "twenty-seven billion, eighty-eight million, nine hundred forty-seven thousand, six hundred eighty-nine".