27189638011 has 2 divisors, whose sum is σ = 27189638012. Its totient is φ = 27189638010.

The previous prime is 27189637987. The next prime is 27189638027. The reversal of 27189638011 is 11083698172.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 27189638011 - 2¹⁹ = 27189113723 is a prime.

It is a super-2 number, since 2×27189638011² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (27189632011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13594819005 + 13594819006.

It is an arithmetic number, because the mean of its divisors is an integer number (13594819006).

Almost surely, 2^27189638011 is an apocalyptic number.

27189638011 is a deficient number, since it is larger than the sum of its proper divisors (1).

27189638011 is an equidigital number, since it uses as much as digits as its factorization.

27189638011 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 145152, while the sum is 46.

The spelling of 27189638011 in words is "twenty-seven billion, one hundred eighty-nine million, six hundred thirty-eight thousand, eleven".