12432036321 has 6 divisors (see below), whose sum is σ = 17957385810. Its totient is φ = 8288024208.

The previous prime is 12432036271. The next prime is 12432036377. The reversal of 12432036321 is 12363023421.

12432036321 is a `hidden beast` number, since 1 + 2 + 4 + 3 + 20 + 3 + 632 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 8496230625 + 3935805696 = 92175^2 + 62736^2 .

It is not a de Polignac number, because 12432036321 - 2⁶ = 12432036257 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12432035321) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 690668676 + ... + 690668693.

It is an arithmetic number, because the mean of its divisors is an integer number (2992897635).

Almost surely, 2^12432036321 is an apocalyptic number.

It is an amenable number.

12432036321 is a deficient number, since it is larger than the sum of its proper divisors (5525349489).

12432036321 is a wasteful number, since it uses less digits than its factorization.

12432036321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1381337375 (or 1381337372 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 27.

Adding to 12432036321 its reverse (12363023421), we get a palindrome (24795059742).

The spelling of 12432036321 in words is "twelve billion, four hundred thirty-two million, thirty-six thousand, three hundred twenty-one".