12393808406817 has 32 divisors (see below), whose sum is σ = 17530709200896. Its totient is φ = 7771753915200.

The previous prime is 12393808406779. The next prime is 12393808406857. The reversal of 12393808406817 is 71860480839321.

It is not a de Polignac number, because 12393808406817 - 2⁷ = 12393808406689 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12393808406857) by changing a digit.

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, 16222692 + ... + 16969482.

It is an arithmetic number, because the mean of its divisors is an integer number (547834662528).

Almost surely, 2^{12393808406817} is an apocalyptic number.

It is an amenable number.

12393808406817 is a deficient number, since it is larger than the sum of its proper divisors (5136900794079).

12393808406817 is a wasteful number, since it uses less digits than its factorization.

12393808406817 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 750821.

The product of its (nonzero) digits is 13934592, while the sum is 60.

The spelling of 12393808406817 in words is "twelve trillion, three hundred ninety-three billion, eight hundred eight million, four hundred six thousand, eight hundred seventeen".