What is the maximum number of characters that can be stored in a Windows Installer property

Question

I have googled quite a bit and I cannot find the answer. So how many characters can be stored in a Windows Installer property value. If you give an answer can you provide the source of the answer?

Answer 1

I asked the Windows Installer team how large a Property could be when marshalling data from an immediate CustomAction to a deferred CustomAction and I was told that I was only really limited by the amount of memory on the machine.