27324320891 has 16 divisors (see below), whose sum is σ = 32241377280. Its totient is φ = 22669657920.

The previous prime is 27324320879. The next prime is 27324320893. The reversal of 27324320891 is 19802342372.

It is a de Polignac number, because none of the positive numbers 2^k-27324320891 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (41).

It is not an unprimeable number, because it can be changed into a prime (27324320893) 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 15 ways as a sum of consecutive naturals, for example, 338381 + ... + 411278.

It is an arithmetic number, because the mean of its divisors is an integer number (2015086080).

Almost surely, 2^27324320891 is an apocalyptic number.

27324320891 is a deficient number, since it is larger than the sum of its proper divisors (4917056389).

27324320891 is a wasteful number, since it uses less digits than its factorization.

27324320891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 749834.

The product of its (nonzero) digits is 145152, while the sum is 41.

The spelling of 27324320891 in words is "twenty-seven billion, three hundred twenty-four million, three hundred twenty thousand, eight hundred ninety-one".