27808965289 has 8 divisors (see below), whose sum is σ = 32520783680. Its totient is φ = 23281924176.

The previous prime is 27808965271. The next prime is 27808965323. The reversal of 27808965289 is 98256980872.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 27808965289 - 2¹¹ = 27808963241 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 27808965289.

It is not an unprimeable number, because it can be changed into a prime (27808065289) 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 in 7 ways as a sum of consecutive naturals, for example, 46193994 + ... + 46194595.

It is an arithmetic number, because the mean of its divisors is an integer number (4065097960).

Almost surely, 2^27808965289 is an apocalyptic number.

It is an amenable number.

27808965289 is a deficient number, since it is larger than the sum of its proper divisors (4711818391).

27808965289 is an equidigital number, since it uses as much as digits as its factorization.

27808965289 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92388639.

The product of its (nonzero) digits is 34836480, while the sum is 64.

The spelling of 27808965289 in words is "twenty-seven billion, eight hundred eight million, nine hundred sixty-five thousand, two hundred eighty-nine".