It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 780 202 002 is not a prime number.
For example, 780 202 002 can be divided by 2: 780 202 002 / 2 = 390 101 001.
For 780 202 002 to be a prime number, it would have been required that 780 202 002 has only two divisors, i.e., itself and 1.
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780 202 002 is an even number, because it is evenly divisible by 2: 780 202 002 / 2 = 390 101 001.
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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 780 202 002 is about 27 932.096.
Thus, the square root of 780 202 002 is not an integer, and therefore 780 202 002 is not a square number.
The square of a number (here 780 202 002) is the result of the product of this number (780 202 002) by itself (i.e., 780 202 002 × 780 202 002); the square of 780 202 002 is sometimes called "raising 780 202 002 to the power 2", or "780 202 002 squared".
The square of 780 202 002 is 608 715 163 924 808 064 because 780 202 002 × 780 202 002 = 780 202 0022 = 608 715 163 924 808 064.
As a consequence, 780 202 002 is the square root of 608 715 163 924 808 064.
780 202 002 is a number with 9 digits.
The multiples of 780 202 002 are all integers evenly divisible by 780 202 002, that is all numbers such that the remainder of the division by 780 202 002 is zero. There are infinitely many multiples of 780 202 002. The smallest multiples of 780 202 002 are: