12433523421 has 32 divisors (see below), whose sum is σ = 18362760192. Its totient is φ = 7420383360.

The previous prime is 12433523419. The next prime is 12433523489. The reversal of 12433523421 is 12432533421.

It is not a de Polignac number, because 12433523421 - 2¹ = 12433523419 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12433323421) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 850056 + ... + 864558.

It is an arithmetic number, because the mean of its divisors is an integer number (573836256).

Almost surely, 2^12433523421 is an apocalyptic number.

12433523421 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12433523421 is a deficient number, since it is larger than the sum of its proper divisors (5929236771).

12433523421 is a wasteful number, since it uses less digits than its factorization.

12433523421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14913.

The product of its digits is 17280, while the sum is 30.

The spelling of 12433523421 in words is "twelve billion, four hundred thirty-three million, five hundred twenty-three thousand, four hundred twenty-one".