12643054106 has 16 divisors (see below), whose sum is σ = 19228967784. Its totient is φ = 6233439744.

The previous prime is 12643054079. The next prime is 12643054111. The reversal of 12643054106 is 60145034621.

12643054106 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 12642978481 + 75625 = 112441^2 + 275^2 .

It is a Curzon 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 7 ways as a sum of consecutive naturals, for example, 841250 + ... + 856146.

Almost surely, 2^12643054106 is an apocalyptic number.

12643054106 is a deficient number, since it is larger than the sum of its proper divisors (6585913678).

12643054106 is a wasteful number, since it uses less digits than its factorization.

12643054106 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20785.

The product of its (nonzero) digits is 17280, while the sum is 32.

Adding to 12643054106 its reverse (60145034621), we get a palindrome (72788088727).

The spelling of 12643054106 in words is "twelve billion, six hundred forty-three million, fifty-four thousand, one hundred six".