12432440223 has 16 divisors (see below), whose sum is σ = 21049634560. Its totient is φ = 7104251448.

The previous prime is 12432440197. The next prime is 12432440233. The reversal of 12432440223 is 32204423421.

12432440223 is a `hidden beast` number, since 1 + 2 + 432 + 4 + 4 + 0 + 223 = 666.

It is not a de Polignac number, because 12432440223 - 2⁶ = 12432440159 is a prime.

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

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12432440233) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32889865 + ... + 32890242.

It is an arithmetic number, because the mean of its divisors is an integer number (1315602160).

Almost surely, 2^12432440223 is an apocalyptic number.

12432440223 is a deficient number, since it is larger than the sum of its proper divisors (8617194337).

12432440223 is an equidigital number, since it uses as much as digits as its factorization.

12432440223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65780123 (or 65780117 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 27.

Adding to 12432440223 its reverse (32204423421), we get a palindrome (44636863644).

The spelling of 12432440223 in words is "twelve billion, four hundred thirty-two million, four hundred forty thousand, two hundred twenty-three".