12643243683 has 16 divisors (see below), whose sum is σ = 19335456000. Its totient is φ = 7198625376.

The previous prime is 12643243667. The next prime is 12643243721. The reversal of 12643243683 is 38634234621.

12643243683 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 12643243683 - 2⁴ = 12643243667 is a prime.

It is a super-2 number, since 2×12643243683² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12643243633) 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 15 ways as a sum of consecutive naturals, for example, 1080933 + ... + 1092566.

It is an arithmetic number, because the mean of its divisors is an integer number (1208466000).

Almost surely, 2^12643243683 is an apocalyptic number.

12643243683 is a deficient number, since it is larger than the sum of its proper divisors (6692212317).

12643243683 is a wasteful number, since it uses less digits than its factorization.

12643243683 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2173786.

The product of its digits is 497664, while the sum is 42.

The spelling of 12643243683 in words is "twelve billion, six hundred forty-three million, two hundred forty-three thousand, six hundred eighty-three".