216125164266 has 16 divisors (see below), whose sum is σ = 471545813088. Its totient is φ = 65492474000.

The previous prime is 216125164237. The next prime is 216125164289. The reversal of 216125164266 is 662461521612.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1637311785 + ... + 1637311916.

It is an arithmetic number, because the mean of its divisors is an integer number (29471613318).

Almost surely, 2^216125164266 is an apocalyptic number.

216125164266 is an abundant number, since it is smaller than the sum of its proper divisors (255420648822).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

216125164266 is a wasteful number, since it uses less digits than its factorization.

216125164266 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3274623717.

The product of its digits is 207360, while the sum is 42.

Adding to 216125164266 its reverse (662461521612), we get a palindrome (878586685878).

The spelling of 216125164266 in words is "two hundred sixteen billion, one hundred twenty-five million, one hundred sixty-four thousand, two hundred sixty-six".