12808426244965 has 16 divisors (see below), whose sum is σ = 16554029910768. Its totient is φ = 9457614637056.

The previous prime is 12808426244903. The next prime is 12808426244969. The reversal of 12808426244965 is 56944262480821.

It is a happy number.

12808426244965 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 8 ways, for example, as 719168449444 + 12089257795521 = 848038^2 + 3476961^2 .

It is a cyclic number.

It is not a de Polignac number, because 12808426244965 - 2⁷ = 12808426244837 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12808426244969) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8859522 + ... + 10203331.

It is an arithmetic number, because the mean of its divisors is an integer number (1034626869423).

Almost surely, 2^{12808426244965} is an apocalyptic number.

It is an amenable number.

12808426244965 is a deficient number, since it is larger than the sum of its proper divisors (3745603665803).

12808426244965 is a wasteful number, since it uses less digits than its factorization.

12808426244965 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19073208.

The product of its (nonzero) digits is 53084160, while the sum is 61.

The spelling of 12808426244965 in words is "twelve trillion, eight hundred eight billion, four hundred twenty-six million, two hundred forty-four thousand, nine hundred sixty-five".