12743146249 has 4 divisors (see below), whose sum is σ = 12743589636. Its totient is φ = 12742702864.

The previous prime is 12743146201. The next prime is 12743146261. The reversal of 12743146249 is 94264134721.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 94264134721 = 3467 ⋅27188963.

It can be written as a sum of positive squares in 2 ways, for example, as 8898526224 + 3844620025 = 94332^2 + 62005^2 .

It is a cyclic number.

It is not a de Polignac number, because 12743146249 - 2¹¹ = 12743144201 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12743146349) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 175354 + ... + 237139.

It is an arithmetic number, because the mean of its divisors is an integer number (3185897409).

Almost surely, 2^12743146249 is an apocalyptic number.

It is an amenable number.

12743146249 is a deficient number, since it is larger than the sum of its proper divisors (443387).

12743146249 is an equidigital number, since it uses as much as digits as its factorization.

12743146249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 443386.

The product of its digits is 290304, while the sum is 43.

The spelling of 12743146249 in words is "twelve billion, seven hundred forty-three million, one hundred forty-six thousand, two hundred forty-nine".