12247743789 has 12 divisors (see below), whose sum is σ = 18731843676. Its totient is φ = 7684858752.

The previous prime is 12247743787. The next prime is 12247743791. The reversal of 12247743789 is 98734774221.

12247743789 is a `hidden beast` number, since 122 + 4 + 7 + 7 + 437 + 89 = 666.

It is an interprime number because it is at equal distance from previous prime (12247743787) and next prime (12247743791).

It can be written as a sum of positive squares in 2 ways, for example, as 6203925225 + 6043818564 = 78765^2 + 77742^2 .

It is not a de Polignac number, because 12247743789 - 2¹ = 12247743787 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12247743787) 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, 40025154 + ... + 40025459.

It is an arithmetic number, because the mean of its divisors is an integer number (1560986973).

Almost surely, 2^12247743789 is an apocalyptic number.

It is an amenable number.

12247743789 is a deficient number, since it is larger than the sum of its proper divisors (6484099887).

12247743789 is a wasteful number, since it uses less digits than its factorization.

12247743789 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80050636 (or 80050633 counting only the distinct ones).

The product of its digits is 4741632, while the sum is 54.

The spelling of 12247743789 in words is "twelve billion, two hundred forty-seven million, seven hundred forty-three thousand, seven hundred eighty-nine".