12438483421 has 16 divisors (see below), whose sum is σ = 15974509824. Its totient is φ = 9413547264.

The previous prime is 12438483383. The next prime is 12438483433.

12438483421 is nontrivially palindromic in base 10.

It is a cyclic number.

It is not a de Polignac number, because 12438483421 - 2¹⁵ = 12438450653 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12438483521) 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, 2969356 + ... + 2973541.

It is an arithmetic number, because the mean of its divisors is an integer number (998406864).

Almost surely, 2^12438483421 is an apocalyptic number.

It is an amenable number.

12438483421 is a deficient number, since it is larger than the sum of its proper divisors (3536026403).

12438483421 is a wasteful number, since it uses less digits than its factorization.

12438483421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5942940.

The product of its digits is 147456, while the sum is 40.

The spelling of 12438483421 in words is "twelve billion, four hundred thirty-eight million, four hundred eighty-three thousand, four hundred twenty-one".