12443513666105 has 16 divisors (see below), whose sum is σ = 15487629341904. Its totient is φ = 9589863340800.

The previous prime is 12443513666083. The next prime is 12443513666137. The reversal of 12443513666105 is 50166631534421.

It can be written as a sum of positive squares in 8 ways, for example, as 1952159456809 + 10491354209296 = 1397197^2 + 3239036^2 .

It is not a de Polignac number, because 12443513666105 - 2²⁸ = 12443245230649 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12443513666105.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 332962682 + ... + 333000051.

It is an arithmetic number, because the mean of its divisors is an integer number (967976833869).

Almost surely, 2^{12443513666105} is an apocalyptic number.

It is an amenable number.

12443513666105 is a deficient number, since it is larger than the sum of its proper divisors (3044115675799).

12443513666105 is a wasteful number, since it uses less digits than its factorization.

12443513666105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 665962876.

The product of its (nonzero) digits is 1555200, while the sum is 47.

The spelling of 12443513666105 in words is "twelve trillion, four hundred forty-three billion, five hundred thirteen million, six hundred sixty-six thousand, one hundred five".