12135443087 has 2 divisors, whose sum is σ = 12135443088. Its totient is φ = 12135443086.

The previous prime is 12135443071. The next prime is 12135443119. The reversal of 12135443087 is 78034453121.

12135443087 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12135443087 - 2⁴ = 12135443071 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12135443087.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12135443017) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6067721543 + 6067721544.

It is an arithmetic number, because the mean of its divisors is an integer number (6067721544).

Almost surely, 2^12135443087 is an apocalyptic number.

12135443087 is a deficient number, since it is larger than the sum of its proper divisors (1).

12135443087 is an equidigital number, since it uses as much as digits as its factorization.

12135443087 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 80640, while the sum is 38.

The spelling of 12135443087 in words is "twelve billion, one hundred thirty-five million, four hundred forty-three thousand, eighty-seven".