27071242591 has 4 divisors (see below), whose sum is σ = 27104706000. Its totient is φ = 27037779184.

The previous prime is 27071242577. The next prime is 27071242613. The reversal of 27071242591 is 19524217072.

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 27071242591 - 2¹¹ = 27071240543 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 (27071242531) 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, 16730491 + ... + 16732108.

It is an arithmetic number, because the mean of its divisors is an integer number (6776176500).

Almost surely, 2^27071242591 is an apocalyptic number.

27071242591 is a deficient number, since it is larger than the sum of its proper divisors (33463409).

27071242591 is an equidigital number, since it uses as much as digits as its factorization.

27071242591 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33463408.

The product of its (nonzero) digits is 70560, while the sum is 40.

The spelling of 27071242591 in words is "twenty-seven billion, seventy-one million, two hundred forty-two thousand, five hundred ninety-one".