27904497540191 has 2 divisors, whose sum is σ = 27904497540192. Its totient is φ = 27904497540190.

The previous prime is 27904497540151. The next prime is 27904497540319. The reversal of 27904497540191 is 19104579440972.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 27904497540191 - 2¹⁴ = 27904497523807 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27904497540151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13952248770095 + 13952248770096.

It is an arithmetic number, because the mean of its divisors is an integer number (13952248770096).

Almost surely, 2^{27904497540191} is an apocalyptic number.

27904497540191 is a deficient number, since it is larger than the sum of its proper divisors (1).

27904497540191 is an equidigital number, since it uses as much as digits as its factorization.

27904497540191 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 22861440, while the sum is 62.

The spelling of 27904497540191 in words is "twenty-seven trillion, nine hundred four billion, four hundred ninety-seven million, five hundred forty thousand, one hundred ninety-one".