12285539558309 has 2 divisors, whose sum is σ = 12285539558310. Its totient is φ = 12285539558308.

The previous prime is 12285539558273. The next prime is 12285539558323. The reversal of 12285539558309 is 90385593558221.

12285539558309 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11558109677284 + 727429881025 = 3399722^2 + 852895^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12285539558309 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12285539558399) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6142769779154 + 6142769779155.

It is an arithmetic number, because the mean of its divisors is an integer number (6142769779155).

Almost surely, 2^{12285539558309} is an apocalyptic number.

It is an amenable number.

12285539558309 is a deficient number, since it is larger than the sum of its proper divisors (1).

12285539558309 is an equidigital number, since it uses as much as digits as its factorization.

12285539558309 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 116640000, while the sum is 65.

The spelling of 12285539558309 in words is "twelve trillion, two hundred eighty-five billion, five hundred thirty-nine million, five hundred fifty-eight thousand, three hundred nine".