Our last comman ancestor of all known great apes lived about 16.5 mya. The orangatan branch split off about 12 mya. After that split the orangatan branch split several more tiimes. The modern orangatan species, the last split of this branch, emerged about 400,000 years ago. 

Orangutans (genus Pongo) are great apes native to Indonesia and Malaysia, characterized by their distinctive reddish-brown fur, long arms, and intelligent behavior. They are the most arboreal of all great apes, spending most of their time in trees, and are skilled climbers and swing between branches with ease. Orangutans are also known for their advanced problem-solving abilities and have been observed using tools, such as sticks, to extract food and navigate their environment. With their slow pace of life and solitary nature, orangutans have adapted to their forest habitat in unique ways, making them one of the most fascinating and endangered primate species.