12864449343 has 4 divisors (see below), whose sum is σ = 17152599128. Its totient is φ = 8576299560.

The previous prime is 12864449261. The next prime is 12864449371. The reversal of 12864449343 is 34394446821.

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

It is not a de Polignac number, because 12864449343 - 2²⁵ = 12830894911 is a prime.

It is a super-2 number, since 2×12864449343² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12864449292 and 12864449301.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12864489343) 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, 2144074888 + ... + 2144074893.

It is an arithmetic number, because the mean of its divisors is an integer number (4288149782).

Almost surely, 2^12864449343 is an apocalyptic number.

12864449343 is a deficient number, since it is larger than the sum of its proper divisors (4288149785).

12864449343 is an equidigital number, since it uses as much as digits as its factorization.

12864449343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4288149784.

The product of its digits is 1990656, while the sum is 48.

The spelling of 12864449343 in words is "twelve billion, eight hundred sixty-four million, four hundred forty-nine thousand, three hundred forty-three".