12115112321539 has 2 divisors, whose sum is σ = 12115112321540. Its totient is φ = 12115112321538.

The previous prime is 12115112321441. The next prime is 12115112321561. The reversal of 12115112321539 is 93512321151121.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12115112321539 - 2¹⁹ = 12115111797251 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12115112321498 and 12115112321507.

It is not a weakly prime, because it can be changed into another prime (12115112321569) 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, 6057556160769 + 6057556160770.

It is an arithmetic number, because the mean of its divisors is an integer number (6057556160770).

Almost surely, 2^{12115112321539} is an apocalyptic number.

12115112321539 is a deficient number, since it is larger than the sum of its proper divisors (1).

12115112321539 is an equidigital number, since it uses as much as digits as its factorization.

12115112321539 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 16200, while the sum is 37.

The spelling of 12115112321539 in words is "twelve trillion, one hundred fifteen billion, one hundred twelve million, three hundred twenty-one thousand, five hundred thirty-nine".