# Golang math.MaxInt64 Constant with Examples

Golang | math.MaxInt64 Constant: Here, we are going to learn about the MaxInt64 constant of the math package with its usages, syntax, and examples.
Submitted by IncludeHelp, on August 28, 2021

## math.MaxInt64 Constant

The MaxInt64 constant is an inbuilt constant of the math package which is used to get the highest (maximum) value that can be represented by an int64.

The value of math.MaxInt64 constants is 1<<63 - 1 or 9223372036854775807.

Syntax:

```int math.MaxInt64
```

Parameter(s):

• None

Return Value:

The return type of math.MaxInt64 constant is int, it returns the highest (maximum) value that can be represented by an int64.

Example 1:

```// Golang program to demonstrate the
// example of math.MaxInt64 Constant

package main

import (
"fmt"
"math"
)

func main() {
fmt.Printf("Type of math.MaxInt64 is %T\n", math.MaxInt64)
fmt.Println("Value of math.MaxInt64:", math.MaxInt64)
}
```

Output:

```Type of math.MaxInt64 is int
Value of math.MaxInt64: 9223372036854775807
```

Explanation:

In the above program, we imported the math package to use the math.MaxInt64 constant, then printed the type and value of the math.MaxInt64 constant.

Example 2:

```// Golang program to demonstrate the
// example of math.MaxInt64 Constant

package main

import (
"fmt"
"math"
)

// creating function to
// return the value of MaxInt64.
func getMaxInt64() int {
return math.MaxInt64
}

func main() {
fmt.Println("Value of math.MaxInt64:", getMaxInt64())
}
```

Output:

```Value of math.MaxInt64: 9223372036854775807
```