12643046445 has 32 divisors (see below), whose sum is σ = 20456190720. Its totient is φ = 6667315200.

The previous prime is 12643046333. The next prime is 12643046461. The reversal of 12643046445 is 54464034621.

12643046445 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12643046445 - 2²⁵ = 12609492013 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 31 ways as a sum of consecutive naturals, for example, 1889616 + ... + 1896294.

It is an arithmetic number, because the mean of its divisors is an integer number (639255960).

Almost surely, 2^12643046445 is an apocalyptic number.

12643046445 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12643046445 is a deficient number, since it is larger than the sum of its proper divisors (7813144275).

12643046445 is a wasteful number, since it uses less digits than its factorization.

12643046445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8085.

The product of its (nonzero) digits is 276480, while the sum is 39.

The spelling of 12643046445 in words is "twelve billion, six hundred forty-three million, forty-six thousand, four hundred forty-five".