27944260247 has 4 divisors (see below), whose sum is σ = 28402362936. Its totient is φ = 27486157560.

The previous prime is 27944260217. The next prime is 27944260259. The reversal of 27944260247 is 74206244972.

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 27944260247 - 2²⁰ = 27943211671 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27944260207) 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 3 ways as a sum of consecutive naturals, for example, 229051253 + ... + 229051374.

It is an arithmetic number, because the mean of its divisors is an integer number (7100590734).

Almost surely, 2^27944260247 is an apocalyptic number.

27944260247 is a deficient number, since it is larger than the sum of its proper divisors (458102689).

27944260247 is an equidigital number, since it uses as much as digits as its factorization.

27944260247 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 458102688.

The product of its (nonzero) digits is 1354752, while the sum is 47.

The spelling of 27944260247 in words is "twenty-seven billion, nine hundred forty-four million, two hundred sixty thousand, two hundred forty-seven".