12823205647 has 8 divisors (see below), whose sum is σ = 14673719936. Its totient is φ = 10977348312.

The previous prime is 12823205579. The next prime is 12823205657. The reversal of 12823205647 is 74650232821.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-12823205647 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12823205657) 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 in 7 ways as a sum of consecutive naturals, for example, 1158333 + ... + 1169350.

It is an arithmetic number, because the mean of its divisors is an integer number (1834214992).

Almost surely, 2^12823205647 is an apocalyptic number.

12823205647 is a deficient number, since it is larger than the sum of its proper divisors (1850514289).

12823205647 is an equidigital number, since it uses as much as digits as its factorization.

12823205647 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2328477.

The product of its (nonzero) digits is 161280, while the sum is 40.

The spelling of 12823205647 in words is "twelve billion, eight hundred twenty-three million, two hundred five thousand, six hundred forty-seven".