91019275027211 has 2 divisors, whose sum is σ = 91019275027212. Its totient is φ = 91019275027210.

The previous prime is 91019275027181. The next prime is 91019275027267. The reversal of 91019275027211 is 11272057291019.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 91019275027211 - 2¹⁴ = 91019275010827 is a prime.

It is not a weakly prime, because it can be changed into another prime (91019275027711) 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, 45509637513605 + 45509637513606.

It is an arithmetic number, because the mean of its divisors is an integer number (45509637513606).

Almost surely, 2^{91019275027211} is an apocalyptic number.

91019275027211 is a deficient number, since it is larger than the sum of its proper divisors (1).

91019275027211 is an equidigital number, since it uses as much as digits as its factorization.

91019275027211 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 158760, while the sum is 47.

The spelling of 91019275027211 in words is "ninety-one trillion, nineteen billion, two hundred seventy-five million, twenty-seven thousand, two hundred eleven".