12844156663 has 24 divisors (see below), whose sum is σ = 14364475200. Its totient is φ = 11472873984.

The previous prime is 12844156657. The next prime is 12844156673. The reversal of 12844156663 is 36665144821.

It is not a de Polignac number, because 12844156663 - 2²⁹ = 12307285751 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 (12844156603) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 697843 + ... + 716011.

It is an arithmetic number, because the mean of its divisors is an integer number (598519800).

Almost surely, 2^12844156663 is an apocalyptic number.

12844156663 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

12844156663 is a deficient number, since it is larger than the sum of its proper divisors (1520318537).

12844156663 is a wasteful number, since it uses less digits than its factorization.

12844156663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18331 (or 18318 counting only the distinct ones).

The product of its digits is 829440, while the sum is 46.

The spelling of 12844156663 in words is "twelve billion, eight hundred forty-four million, one hundred fifty-six thousand, six hundred sixty-three".