27137486791 has 2 divisors, whose sum is σ = 27137486792. Its totient is φ = 27137486790.

The previous prime is 27137486737. The next prime is 27137486797. The reversal of 27137486791 is 19768473172.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-27137486791 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27137486797) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13568743395 + 13568743396.

It is an arithmetic number, because the mean of its divisors is an integer number (13568743396).

Almost surely, 2^27137486791 is an apocalyptic number.

27137486791 is a deficient number, since it is larger than the sum of its proper divisors (1).

27137486791 is an equidigital number, since it uses as much as digits as its factorization.

27137486791 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3556224, while the sum is 55.

The spelling of 27137486791 in words is "twenty-seven billion, one hundred thirty-seven million, four hundred eighty-six thousand, seven hundred ninety-one".