Final answer:
The number 2.64489959 × 10³⁶ in exponential notation is 2.64489959 × 10^36.
Step-by-step explanation:
The number 2.64489959 × 10³⁶ in exponential notation is 2.64489959 × 1036. In exponential notation, a number is written in the form coefficient × 10exponent. In this case, the coefficient is 2.64489959 and the exponent is 36.