12822066809 has 4 divisors (see below), whose sum is σ = 12847258020. Its totient is φ = 12796875600.

The previous prime is 12822066793. The next prime is 12822066821. The reversal of 12822066809 is 90866022821.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 11818951225 + 1003115584 = 108715^2 + 31672^2 .

It is a cyclic number.

It is not a de Polignac number, because 12822066809 - 2⁴ = 12822066793 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12822066809.

It is not an unprimeable number, because it can be changed into a prime (12822066109) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12594842 + ... + 12595859.

It is an arithmetic number, because the mean of its divisors is an integer number (3211814505).

Almost surely, 2^12822066809 is an apocalyptic number.

It is an amenable number.

12822066809 is a deficient number, since it is larger than the sum of its proper divisors (25191211).

12822066809 is an equidigital number, since it uses as much as digits as its factorization.

12822066809 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25191210.

The product of its (nonzero) digits is 165888, while the sum is 44.

The spelling of 12822066809 in words is "twelve billion, eight hundred twenty-two million, sixty-six thousand, eight hundred nine".