12043323243 has 72 divisors (see below), whose sum is σ = 22220361072. Its totient is φ = 6476972544.

The previous prime is 12043323233. The next prime is 12043323283. The reversal of 12043323243 is 34232334021.

12043323243 is a `hidden beast` number, since 1 + 2 + 0 + 4 + 332 + 324 + 3 = 666.

It is not a de Polignac number, because 12043323243 - 2⁶ = 12043323179 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (12043323233) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 172671 + ... + 232167.

It is an arithmetic number, because the mean of its divisors is an integer number (308616126).

Almost surely, 2^12043323243 is an apocalyptic number.

12043323243 is a deficient number, since it is larger than the sum of its proper divisors (10177037829).

12043323243 is an equidigital number, since it uses as much as digits as its factorization.

12043323243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59543 (or 59524 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 27.

Adding to 12043323243 its reverse (34232334021), we get a palindrome (46275657264).

The spelling of 12043323243 in words is "twelve billion, forty-three million, three hundred twenty-three thousand, two hundred forty-three".