12065423405 has 16 divisors (see below), whose sum is σ = 16548758400. Its totient is φ = 8272487232.

The previous prime is 12065423353. The next prime is 12065423437. The reversal of 12065423405 is 50432456021.

12065423405 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 12065423405 - 2¹² = 12065419309 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 445307 + ... + 471623.

It is an arithmetic number, because the mean of its divisors is an integer number (1034297400).

Almost surely, 2^12065423405 is an apocalyptic number.

It is an amenable number.

12065423405 is a deficient number, since it is larger than the sum of its proper divisors (4483334995).

12065423405 is a wasteful number, since it uses less digits than its factorization.

12065423405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39428.

The product of its (nonzero) digits is 28800, while the sum is 32.

Adding to 12065423405 its reverse (50432456021), we get a palindrome (62497879426).

The spelling of 12065423405 in words is "twelve billion, sixty-five million, four hundred twenty-three thousand, four hundred five".