The Wolfram Language provides flexible mechanisms for full typeset formatting of numbers of any magnitude and precision, to optimize readability, portability and external compatibility.

NumberForm — general control of number display

PaddedForm — insert padding to align numbers

DecimalForm — display without scientific notation

ScientificForm — scientific notation

EngineeringForm — engineering notation

PercentForm — display as a percentage

InputForm, OutputForm — plain text versions of numbers

CForm, FortranForm — C and Fortran-like "E" notation

AccountingForm — negative numbers in (…), etc.

BaseForm — display in base b

IntegerName — name of an integer (e.g. "thirty-five")

NumberMarks — option to include precision information with ` marks

$NumberMarks — globally determine whether to use ` marks for number portability

DefaultPrintPrecision — option for default print precision of machine numbers

ScientificNotationThreshold — option for threshold for scientific notation

N — compute to specified precision

Displaying Quantities

QuantityForm — specify how units etc. should be displayed