12811806923 has 2 divisors, whose sum is σ = 12811806924. Its totient is φ = 12811806922.

The previous prime is 12811806901. The next prime is 12811806929. The reversal of 12811806923 is 32960811821.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12811806923 - 2¹⁰ = 12811805899 is a prime.

It is not a weakly prime, because it can be changed into another prime (12811806929) 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, 6405903461 + 6405903462.

It is an arithmetic number, because the mean of its divisors is an integer number (6405903462).

Almost surely, 2^12811806923 is an apocalyptic number.

12811806923 is a deficient number, since it is larger than the sum of its proper divisors (1).

12811806923 is an equidigital number, since it uses as much as digits as its factorization.

12811806923 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 41472, while the sum is 41.

The spelling of 12811806923 in words is "twelve billion, eight hundred eleven million, eight hundred six thousand, nine hundred twenty-three".