Number 
A number is a special data type (data_type). There are fixed point and floating point numbers:
A fixed point number is described by the number of significant digits and the number of decimal places. The maximum number of significant digits is 38.
A floating point number consists of a mantissa and an exponent. The mantissa may have up to 38 significant digits. The valid range of values for floating point numbers consists of the intervals from -9.9999999999999999999999999999999999999E+62 to -1E-64 and from +1E-64 to +9.9999999999999999999999999999999999999E+62 and the value 0.0.
Example: FLOAT
All numbers can be compared to one another.