27747708243 has 32 divisors (see below), whose sum is σ = 39643296000. Its totient is φ = 17211139200.

The previous prime is 27747708239. The next prime is 27747708251. The reversal of 27747708243 is 34280774772.

It is not a de Polignac number, because 27747708243 - 2² = 27747708239 is a prime.

It is not an unprimeable number, because it can be changed into a prime (27747708223) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2396833 + ... + 2408381.

It is an arithmetic number, because the mean of its divisors is an integer number (1238853000).

Almost surely, 2^27747708243 is an apocalyptic number.

27747708243 is a deficient number, since it is larger than the sum of its proper divisors (11895587757).

27747708243 is a wasteful number, since it uses less digits than its factorization.

27747708243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12323.

The product of its (nonzero) digits is 3687936, while the sum is 51.

The spelling of 27747708243 in words is "twenty-seven billion, seven hundred forty-seven million, seven hundred eight thousand, two hundred forty-three".