Reading Large (100GB+) Files.

As the title says, I am searching ways to read huge files (100GB+).
I know that I can split the file but I specifically want to try and read this large file, I do not even need ro edit it, only read it and I want to know what would be the most efficient and optimized way of doing so. It is like a challenge for me but nothing seems to be enough for this size and most apps cannot handle it properly.
Thank you for you insights <3