27013239791 has 4 divisors (see below), whose sum is σ = 27013875912. Its totient is φ = 27012603672.

The previous prime is 27013239779. The next prime is 27013239811. The reversal of 27013239791 is 19793231072.

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 27013239791 - 2¹⁴ = 27013223407 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 (27013239191) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 249425 + ... + 340938.

It is an arithmetic number, because the mean of its divisors is an integer number (6753468978).

Almost surely, 2^27013239791 is an apocalyptic number.

27013239791 is a deficient number, since it is larger than the sum of its proper divisors (636121).

27013239791 is an equidigital number, since it uses as much as digits as its factorization.

27013239791 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 636120.

The product of its (nonzero) digits is 142884, while the sum is 44.

The spelling of 27013239791 in words is "twenty-seven billion, thirteen million, two hundred thirty-nine thousand, seven hundred ninety-one".