12451133243 has 4 divisors (see below), whose sum is σ = 12457370160. Its totient is φ = 12444896328.

The previous prime is 12451133231. The next prime is 12451133249. The reversal of 12451133243 is 34233115421.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 34233115421 = 117209 ⋅292069.

It is a cyclic number.

It is not a de Polignac number, because 12451133243 - 2⁶ = 12451133179 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12451133249) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3115463 + ... + 3119456.

It is an arithmetic number, because the mean of its divisors is an integer number (3114342540).

Almost surely, 2^12451133243 is an apocalyptic number.

12451133243 is a deficient number, since it is larger than the sum of its proper divisors (6236917).

12451133243 is an equidigital number, since it uses as much as digits as its factorization.

12451133243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6236916.

The product of its digits is 8640, while the sum is 29.

Adding to 12451133243 its reverse (34233115421), we get a palindrome (46684248664).

The spelling of 12451133243 in words is "twelve billion, four hundred fifty-one million, one hundred thirty-three thousand, two hundred forty-three".