# UInt64

> Represents a 64 bit unsigned integer (ulong).

## Definition

* **Type:** Field
* **Namespace:** [UnityEditor](/engine/6000.0/script-reference/unityeditor.md)
* **Assembly:** UnityEditor

```csharp
UInt64 = 8
```

### Remarks

Additional Resources: [SerializedProperty.numericType](/engine/6000.0/script-reference/unityeditor/serializedproperty/numerictype.md), [SerializedProperty.ulongValue](/engine/6000.0/script-reference/unityeditor/serializedproperty/ulongvalue.md).