12426605603405 has 24 divisors (see below), whose sum is σ = 17084814948096. Its totient is φ = 8499847507200.

The previous prime is 12426605603393. The next prime is 12426605603431. The reversal of 12426605603405 is 50430650662421.

It is a happy number.

It is not a de Polignac number, because 12426605603405 - 2¹⁶ = 12426605537869 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 (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4524044 + ... + 6732026.

It is an arithmetic number, because the mean of its divisors is an integer number (711867289504).

Almost surely, 2^{12426605603405} is an apocalyptic number.

It is an amenable number.

12426605603405 is a deficient number, since it is larger than the sum of its proper divisors (4658209344691).

12426605603405 is an frugal number, since it uses more digits than its factorization.

12426605603405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2208797 (or 2208396 counting only the distinct ones).

The product of its (nonzero) digits is 1036800, while the sum is 44.

The spelling of 12426605603405 in words is "twelve trillion, four hundred twenty-six billion, six hundred five million, six hundred three thousand, four hundred five".