27513198689 has 2 divisors, whose sum is σ = 27513198690. Its totient is φ = 27513198688.

The previous prime is 27513198641. The next prime is 27513198737. The reversal of 27513198689 is 98689131572.

It is a balanced prime because it is at equal distance from previous prime (27513198641) and next prime (27513198737).

It can be written as a sum of positive squares in only one way, i.e., 18938438689 + 8574760000 = 137617^2 + 92600^2 .

It is a cyclic number.

It is not a de Polignac number, because 27513198689 - 2²⁴ = 27496421473 is a prime.

It is a super-2 number, since 2×27513198689² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (27513198619) 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, 13756599344 + 13756599345.

It is an arithmetic number, because the mean of its divisors is an integer number (13756599345).

Almost surely, 2^27513198689 is an apocalyptic number.

It is an amenable number.

27513198689 is a deficient number, since it is larger than the sum of its proper divisors (1).

27513198689 is an equidigital number, since it uses as much as digits as its factorization.

27513198689 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6531840, while the sum is 59.

The spelling of 27513198689 in words is "twenty-seven billion, five hundred thirteen million, one hundred ninety-eight thousand, six hundred eighty-nine".