12818651663 has 8 divisors (see below), whose sum is σ = 14079984000. Its totient is φ = 11615986008.

The previous prime is 12818651623. The next prime is 12818651669. The reversal of 12818651663 is 36615681821.

12818651663 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12818651663 - 2⁸ = 12818651407 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 (12818651669) 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 7 ways as a sum of consecutive naturals, for example, 14666213 + ... + 14667086.

It is an arithmetic number, because the mean of its divisors is an integer number (1759998000).

Almost surely, 2^12818651663 is an apocalyptic number.

12818651663 is a deficient number, since it is larger than the sum of its proper divisors (1261332337).

12818651663 is a wasteful number, since it uses less digits than its factorization.

12818651663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29333341.

The product of its digits is 414720, while the sum is 47.

The spelling of 12818651663 in words is "twelve billion, eight hundred eighteen million, six hundred fifty-one thousand, six hundred sixty-three".