27004139867 has 2 divisors, whose sum is σ = 27004139868. Its totient is φ = 27004139866.

The previous prime is 27004139843. The next prime is 27004139881. The reversal of 27004139867 is 76893140072.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-27004139867 is a prime.

It is not a weakly prime, because it can be changed into another prime (27004139807) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13502069933 + 13502069934.

It is an arithmetic number, because the mean of its divisors is an integer number (13502069934).

Almost surely, 2^27004139867 is an apocalyptic number.

27004139867 is a deficient number, since it is larger than the sum of its proper divisors (1).

27004139867 is an equidigital number, since it uses as much as digits as its factorization.

27004139867 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 508032, while the sum is 47.

The spelling of 27004139867 in words is "twenty-seven billion, four million, one hundred thirty-nine thousand, eight hundred sixty-seven".