12451968233 has 2 divisors, whose sum is σ = 12451968234. Its totient is φ = 12451968232.

The previous prime is 12451968167. The next prime is 12451968253. The reversal of 12451968233 is 33286915421.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12439387024 + 12581209 = 111532^2 + 3547^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12451968233 is a prime.

It is a super-2 number, since 2×12451968233² (a number of 21 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (12451968253) 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 as a sum of consecutive naturals, namely, 6225984116 + 6225984117.

It is an arithmetic number, because the mean of its divisors is an integer number (6225984117).

Almost surely, 2^12451968233 is an apocalyptic number.

It is an amenable number.

12451968233 is a deficient number, since it is larger than the sum of its proper divisors (1).

12451968233 is an equidigital number, since it uses as much as digits as its factorization.

12451968233 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 311040, while the sum is 44.

The spelling of 12451968233 in words is "twelve billion, four hundred fifty-one million, nine hundred sixty-eight thousand, two hundred thirty-three".