82444452809 has 2 divisors, whose sum is σ = 82444452810. Its totient is φ = 82444452808.

The previous prime is 82444452793. The next prime is 82444452829. The reversal of 82444452809 is 90825444428.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 55379267584 + 27065185225 = 235328^2 + 164515^2 .

It is a cyclic number.

It is not a de Polignac number, because 82444452809 - 2⁴ = 82444452793 is a prime.

It is a super-3 number, since 3×82444452809³ (a number of 34 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (82444452829) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41222226404 + 41222226405.

It is an arithmetic number, because the mean of its divisors is an integer number (41222226405).

Almost surely, 2^82444452809 is an apocalyptic number.

It is an amenable number.

82444452809 is a deficient number, since it is larger than the sum of its proper divisors (1).

82444452809 is an equidigital number, since it uses as much as digits as its factorization.

82444452809 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2949120, while the sum is 50.

The spelling of 82444452809 in words is "eighty-two billion, four hundred forty-four million, four hundred fifty-two thousand, eight hundred nine".