12804512806 has 32 divisors (see below), whose sum is σ = 19656072288. Its totient is φ = 6254115840.

The previous prime is 12804512779. The next prime is 12804512843. The reversal of 12804512806 is 60821540821.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 19025686 + ... + 19026358.

It is an arithmetic number, because the mean of its divisors is an integer number (614252259).

Almost surely, 2^12804512806 is an apocalyptic number.

12804512806 is a deficient number, since it is larger than the sum of its proper divisors (6851559482).

12804512806 is a wasteful number, since it uses less digits than its factorization.

12804512806 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1576.

The product of its (nonzero) digits is 30720, while the sum is 37.

The spelling of 12804512806 in words is "twelve billion, eight hundred four million, five hundred twelve thousand, eight hundred six".