12864850507529 has 2 divisors, whose sum is σ = 12864850507530. Its totient is φ = 12864850507528.

The previous prime is 12864850507513. The next prime is 12864850507573. The reversal of 12864850507529 is 92570505846821.

12864850507529 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 can be written as a sum of positive squares in only one way, i.e., 6501097575625 + 6363752931904 = 2549725^2 + 2522648^2 .

It is a cyclic number.

It is not a de Polignac number, because 12864850507529 - 2⁴ = 12864850507513 is a prime.

It is not a weakly prime, because it can be changed into another prime (12864850503529) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6432425253764 + 6432425253765.

It is an arithmetic number, because the mean of its divisors is an integer number (6432425253765).

Almost surely, 2^{12864850507529} is an apocalyptic number.

It is an amenable number.

12864850507529 is a deficient number, since it is larger than the sum of its proper divisors (1).

12864850507529 is an equidigital number, since it uses as much as digits as its factorization.

12864850507529 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 48384000, while the sum is 62.

The spelling of 12864850507529 in words is "twelve trillion, eight hundred sixty-four billion, eight hundred fifty million, five hundred seven thousand, five hundred twenty-nine".