82440608191 has 2 divisors, whose sum is σ = 82440608192. Its totient is φ = 82440608190.

The previous prime is 82440608179. The next prime is 82440608281. The reversal of 82440608191 is 19180604428.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 82440608191 - 2⁹ = 82440607679 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (82440608161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41220304095 + 41220304096.

It is an arithmetic number, because the mean of its divisors is an integer number (41220304096).

Almost surely, 2^82440608191 is an apocalyptic number.

82440608191 is a deficient number, since it is larger than the sum of its proper divisors (1).

82440608191 is an equidigital number, since it uses as much as digits as its factorization.

82440608191 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 110592, while the sum is 43.

The spelling of 82440608191 in words is "eighty-two billion, four hundred forty million, six hundred eight thousand, one hundred ninety-one".