12743313821 has 12 divisors (see below), whose sum is σ = 14832676800. Its totient is φ = 10916340120.

The previous prime is 12743313769. The next prime is 12743313827. The reversal of 12743313821 is 12831334721.

It is a happy number.

It is not a de Polignac number, because 12743313821 - 2¹⁰ = 12743312797 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12743313827) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6716 + ... + 159786.

It is an arithmetic number, because the mean of its divisors is an integer number (1236056400).

Almost surely, 2^12743313821 is an apocalyptic number.

It is an amenable number.

12743313821 is a deficient number, since it is larger than the sum of its proper divisors (2089362979).

12743313821 is a wasteful number, since it uses less digits than its factorization.

12743313821 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 154784 (or 154777 counting only the distinct ones).

The product of its digits is 24192, while the sum is 35.

The spelling of 12743313821 in words is "twelve billion, seven hundred forty-three million, three hundred thirteen thousand, eight hundred twenty-one".