No, not all people have the same number of atoms. The number of atoms in an individual can vary due to a variety of factors, including their body size, composition, and overall mass. Atoms are the building blocks of matter, and they combine to form molecules, which in turn make up cells, tissues, and organs in the human body.
While the number of atoms in a person is extremely large, it is not a fixed value for everyone. It depends on factors such as height, weight, body composition (muscle, fat, bone density), and individual variations in biological processes. Different individuals will have different amounts and proportions of various elements, such as carbon, hydrogen, oxygen, nitrogen, and so on, which make up the atoms in their bodies.
It's also worth noting that the number of atoms in a person can change over time due to processes such as metabolism, growth, and aging. Nonetheless, the number of atoms for any given individual is astoundingly large, estimated to be on the order of trillions of trillions (10^26) of atoms.