27236328191 has 2 divisors, whose sum is σ = 27236328192. Its totient is φ = 27236328190.

The previous prime is 27236328169. The next prime is 27236328193. The reversal of 27236328191 is 19182363272.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 27236328191 - 2⁶ = 27236328127 is a prime.

It is a super-2 number, since 2×27236328191² (a number of 22 digits) contains 22 as substring.

Together with 27236328193, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27236328193) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13618164095 + 13618164096.

It is an arithmetic number, because the mean of its divisors is an integer number (13618164096).

Almost surely, 2^27236328191 is an apocalyptic number.

27236328191 is a deficient number, since it is larger than the sum of its proper divisors (1).

27236328191 is an equidigital number, since it uses as much as digits as its factorization.

27236328191 is an evil number, because the sum of its binary digits is even.

The product of its digits is 217728, while the sum is 44.

The spelling of 27236328191 in words is "twenty-seven billion, two hundred thirty-six million, three hundred twenty-eight thousand, one hundred ninety-one".