Static numbers are represented internally on 64 to 80 bits(8-10 bytes) depending on the version and operating system used. It can hold virtually any number that fits. Internally is represented as a double floating point number.
You can hold real numbers from 1.7 * 10^-308 to 1.7*10^308 and the 80 bits version can hold real numbers ranging from 3.4 * 10^-4932 to 1.1^4932, positive or negative. The integer numbers are included in this interval. Check the operators section to see what operators are applicable to this data type.