12138495443 has 2 divisors, whose sum is σ = 12138495444. Its totient is φ = 12138495442.

The previous prime is 12138495409. The next prime is 12138495463. The reversal of 12138495443 is 34459483121.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12138495443 - 2⁶ = 12138495379 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12138495394 and 12138495403.

It is not a weakly prime, because it can be changed into another prime (12138495463) 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, 6069247721 + 6069247722.

It is an arithmetic number, because the mean of its divisors is an integer number (6069247722).

Almost surely, 2^12138495443 is an apocalyptic number.

12138495443 is a deficient number, since it is larger than the sum of its proper divisors (1).

12138495443 is an equidigital number, since it uses as much as digits as its factorization.

12138495443 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 414720, while the sum is 44.

The spelling of 12138495443 in words is "twelve billion, one hundred thirty-eight million, four hundred ninety-five thousand, four hundred forty-three".