It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 80 335 018 is not a prime number.
For example, 80 335 018 can be divided by 2: 80 335 018 / 2 = 40 167 509.
For 80 335 018 to be a prime number, it would have been required that 80 335 018 has only two divisors, i.e., itself and 1.
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80 335 018 is an even number, because it is evenly divisible by 2: 80 335 018 / 2 = 40 167 509.
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A number is a perfect square (or a square number) if its square root is an integer; that is to say, it is the product of an integer with itself. Here, the square root of 80 335 018 is about 8 962.980.
Thus, the square root of 80 335 018 is not an integer, and therefore 80 335 018 is not a square number.
The square of a number (here 80 335 018) is the result of the product of this number (80 335 018) by itself (i.e., 80 335 018 × 80 335 018); the square of 80 335 018 is sometimes called "raising 80 335 018 to the power 2", or "80 335 018 squared".
The square of 80 335 018 is 6 453 715 117 060 324 because 80 335 018 × 80 335 018 = 80 335 0182 = 6 453 715 117 060 324.
As a consequence, 80 335 018 is the square root of 6 453 715 117 060 324.
80 335 018 is a number with 8 digits.
The multiples of 80 335 018 are all integers evenly divisible by 80 335 018, that is all numbers such that the remainder of the division by 80 335 018 is zero. There are infinitely many multiples of 80 335 018. The smallest multiples of 80 335 018 are: