"Photoshop 16 LS20 64-bit" points specifically to Adobe Photoshop CC 2015, a version that marked a pivotal step toward the modern features we see today. While the LS20 code in official Adobe links, its widespread presence in the form of pirated software poses serious security and legal risks. The safe and smart path is to use a legal version through Adobe's subscription service. This gives you full access to the software, guaranteed security, and the peace of mind that comes with using genuine, supported products.
To run this specific 64-bit version effectively, your system should meet these minimums: photoshop 16 ls20 64bit