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# NSUInteger

Describes an unsigned integer.

```
typedef unsigned long NSUInteger;
```

## Discussion

When building 32-bit applications, NSUInteger is a 32-bit unsigned integer. A 64-bit application treats NSUInteger as a 64-bit unsigned integer

## Topics

### Constants

[`NSUIntegerMax`](/documentation/ObjectiveC/NSUIntegerMax)

The maximum value for an `NSUInteger`.


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