12643233005 has 32 divisors (see below), whose sum is σ = 16558354176. Its totient is φ = 9211843584.

The previous prime is 12643232989. The next prime is 12643233007. The reversal of 12643233005 is 50033234621.

It is a cyclic number.

It is not a de Polignac number, because 12643233005 - 2⁴ = 12643232989 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12643233007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1891349 + ... + 1898021.

It is an arithmetic number, because the mean of its divisors is an integer number (517448568).

Almost surely, 2^12643233005 is an apocalyptic number.

It is an amenable number.

12643233005 is a deficient number, since it is larger than the sum of its proper divisors (3915121171).

12643233005 is a wasteful number, since it uses less digits than its factorization.

12643233005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7077.

The product of its (nonzero) digits is 12960, while the sum is 29.

Adding to 12643233005 its reverse (50033234621), we get a palindrome (62676467626).

The spelling of 12643233005 in words is "twelve billion, six hundred forty-three million, two hundred thirty-three thousand, five".