27993768227 has 4 divisors (see below), whose sum is σ = 27996819240. Its totient is φ = 27990717216.

The previous prime is 27993768191. The next prime is 27993768259. The reversal of 27993768227 is 72286739972.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 27993768227 - 2⁶ = 27993768163 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 27993768227.

It is not an unprimeable number, because it can be changed into a prime (27993768287) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1511702 + ... + 1530107.

It is an arithmetic number, because the mean of its divisors is an integer number (6999204810).

Almost surely, 2^27993768227 is an apocalyptic number.

27993768227 is a deficient number, since it is larger than the sum of its proper divisors (3051013).

27993768227 is an equidigital number, since it uses as much as digits as its factorization.

27993768227 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3051012.

The product of its digits is 32006016, while the sum is 62.

The spelling of 27993768227 in words is "twenty-seven billion, nine hundred ninety-three million, seven hundred sixty-eight thousand, two hundred twenty-seven".