12333456809 has 2 divisors, whose sum is σ = 12333456810. Its totient is φ = 12333456808.

The previous prime is 12333456739. The next prime is 12333456823. The reversal of 12333456809 is 90865433321.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11739072409 + 594384400 = 108347^2 + 24380^2 .

It is a cyclic number.

It is not a de Polignac number, because 12333456809 - 2³² = 8038489513 is a prime.

It is a super-2 number, since 2×12333456809² (a number of 21 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 12333456809.

It is not a weakly prime, because it can be changed into another prime (12333456859) 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, 6166728404 + 6166728405.

It is an arithmetic number, because the mean of its divisors is an integer number (6166728405).

Almost surely, 2^12333456809 is an apocalyptic number.

It is an amenable number.

12333456809 is a deficient number, since it is larger than the sum of its proper divisors (1).

12333456809 is an equidigital number, since it uses as much as digits as its factorization.

12333456809 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 466560, while the sum is 44.

The spelling of 12333456809 in words is "twelve billion, three hundred thirty-three million, four hundred fifty-six thousand, eight hundred nine".