13821382863 has 8 divisors (see below), whose sum is σ = 20476122800. Its totient is φ = 9214255224.

The previous prime is 13821382843. The next prime is 13821382871. The reversal of 13821382863 is 36828312831.

It is not a de Polignac number, because 13821382863 - 2¹⁶ = 13821317327 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 (13821382843) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 255951508 + ... + 255951561.

It is an arithmetic number, because the mean of its divisors is an integer number (2559515350).

Almost surely, 2^13821382863 is an apocalyptic number.

13821382863 is a deficient number, since it is larger than the sum of its proper divisors (6654739937).

13821382863 is an equidigital number, since it uses as much as digits as its factorization.

13821382863 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 511903078 (or 511903072 counting only the distinct ones).

The product of its digits is 331776, while the sum is 45.

The spelling of 13821382863 in words is "thirteen billion, eight hundred twenty-one million, three hundred eighty-two thousand, eight hundred sixty-three".