12843945599 has 4 divisors (see below), whose sum is σ = 12844257600. Its totient is φ = 12843633600.

The previous prime is 12843945581. The next prime is 12843945617. The reversal of 12843945599 is 99554934821.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 99554934821 = 23 ⋅4328475427.

It is an interprime number because it is at equal distance from previous prime (12843945581) and next prime (12843945617).

It is a cyclic number.

It is not a de Polignac number, because 12843945599 - 2²⁴ = 12827168383 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 (12843945529) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 82802 + ... + 180399.

It is an arithmetic number, because the mean of its divisors is an integer number (3211064400).

Almost surely, 2^12843945599 is an apocalyptic number.

12843945599 is a deficient number, since it is larger than the sum of its proper divisors (312001).

12843945599 is an equidigital number, since it uses as much as digits as its factorization.

12843945599 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 312000.

The product of its digits is 13996800, while the sum is 59.

The spelling of 12843945599 in words is "twelve billion, eight hundred forty-three million, nine hundred forty-five thousand, five hundred ninety-nine".