82643827229 has 2 divisors, whose sum is σ = 82643827230. Its totient is φ = 82643827228.

The previous prime is 82643827207. The next prime is 82643827237. The reversal of 82643827229 is 92272834628.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 69216348100 + 13427479129 = 263090^2 + 115877^2 .

It is a cyclic number.

It is not a de Polignac number, because 82643827229 - 2²⁰ = 82642778653 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (82643827249) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41321913614 + 41321913615.

It is an arithmetic number, because the mean of its divisors is an integer number (41321913615).

Almost surely, 2^82643827229 is an apocalyptic number.

It is an amenable number.

82643827229 is a deficient number, since it is larger than the sum of its proper divisors (1).

82643827229 is an equidigital number, since it uses as much as digits as its factorization.

82643827229 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4644864, while the sum is 53.

The spelling of 82643827229 in words is "eighty-two billion, six hundred forty-three million, eight hundred twenty-seven thousand, two hundred twenty-nine".