12541111243 has 8 divisors (see below), whose sum is σ = 12609276768. Its totient is φ = 12472978944.

The previous prime is 12541111237. The next prime is 12541111249. The reversal of 12541111243 is 34211114521.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (12541111237) and next prime (12541111249).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12541111243 - 2⁹ = 12541110731 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12541111249) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1279146 + ... + 1288912.

It is an arithmetic number, because the mean of its divisors is an integer number (1576159596).

Almost surely, 2^12541111243 is an apocalyptic number.

12541111243 is a deficient number, since it is larger than the sum of its proper divisors (68165525).

12541111243 is an equidigital number, since it uses as much as digits as its factorization.

12541111243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16613.

The product of its digits is 960, while the sum is 25.

Adding to 12541111243 its reverse (34211114521), we get a palindrome (46752225764).

The spelling of 12541111243 in words is "twelve billion, five hundred forty-one million, one hundred eleven thousand, two hundred forty-three".