12863438427 has 16 divisors (see below), whose sum is σ = 19634503680. Its totient is φ = 7338133632.

The previous prime is 12863438417. The next prime is 12863438431. The reversal of 12863438427 is 72483436821.

It is not a de Polignac number, because 12863438427 - 2⁴ = 12863438411 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12863438417) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 504027 + ... + 528932.

It is an arithmetic number, because the mean of its divisors is an integer number (1227156480).

Almost surely, 2^12863438427 is an apocalyptic number.

12863438427 is a deficient number, since it is larger than the sum of its proper divisors (6771065253).

12863438427 is a wasteful number, since it uses less digits than its factorization.

12863438427 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1033562.

The product of its digits is 1548288, while the sum is 48.

The spelling of 12863438427 in words is "twelve billion, eight hundred sixty-three million, four hundred thirty-eight thousand, four hundred twenty-seven".