12443356621441 has 4 divisors (see below), whose sum is σ = 12512872580400. Its totient is φ = 12373840662484.

The previous prime is 12443356621379. The next prime is 12443356621447. The reversal of 12443356621441 is 14412665334421.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 12443356621441 - 2¹⁹ = 12443356097153 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12443356621391 and 12443356621400.

It is not an unprimeable number, because it can be changed into a prime (12443356621447) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34757979211 + ... + 34757979568.

It is an arithmetic number, because the mean of its divisors is an integer number (3128218145100).

Almost surely, 2^{12443356621441} is an apocalyptic number.

It is an amenable number.

12443356621441 is a deficient number, since it is larger than the sum of its proper divisors (69515958959).

12443356621441 is an equidigital number, since it uses as much as digits as its factorization.

12443356621441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69515958958.

The product of its digits is 1658880, while the sum is 46.

The spelling of 12443356621441 in words is "twelve trillion, four hundred forty-three billion, three hundred fifty-six million, six hundred twenty-one thousand, four hundred forty-one".