12443320413 has 32 divisors (see below), whose sum is σ = 19250369280. Its totient is φ = 7928965440.

The previous prime is 12443320397. The next prime is 12443320447. The reversal of 12443320413 is 31402334421.

12443320413 is a `hidden beast` number, since 1 + 2 + 443 + 3 + 204 + 13 = 666.

It is not a de Polignac number, because 12443320413 - 2⁴ = 12443320397 is a prime.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12443120413) 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, 920443 + ... + 933863.

It is an arithmetic number, because the mean of its divisors is an integer number (601574040).

Almost surely, 2^12443320413 is an apocalyptic number.

It is an amenable number.

12443320413 is a deficient number, since it is larger than the sum of its proper divisors (6807048867).

12443320413 is a wasteful number, since it uses less digits than its factorization.

12443320413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14946 (or 14940 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 27.

Adding to 12443320413 its reverse (31402334421), we get a palindrome (43845654834).

The spelling of 12443320413 in words is "twelve billion, four hundred forty-three million, three hundred twenty thousand, four hundred thirteen".