12324640243 has 4 divisors (see below), whose sum is σ = 12353236128. Its totient is φ = 12296044360.

The previous prime is 12324640199. The next prime is 12324640249. The reversal of 12324640243 is 34204642321.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 34204642321 = 2087 ⋅16389383.

It is a cyclic number.

It is not a de Polignac number, because 12324640243 - 2¹³ = 12324632051 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12324640249) 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, 14297296 + ... + 14298157.

It is an arithmetic number, because the mean of its divisors is an integer number (3088309032).

Almost surely, 2^12324640243 is an apocalyptic number.

12324640243 is a deficient number, since it is larger than the sum of its proper divisors (28595885).

12324640243 is an equidigital number, since it uses as much as digits as its factorization.

12324640243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28595884.

The product of its (nonzero) digits is 27648, while the sum is 31.

The spelling of 12324640243 in words is "twelve billion, three hundred twenty-four million, six hundred forty thousand, two hundred forty-three".