217552112208673 has 16 divisors (see below), whose sum is σ = 237952427731200. Its totient is φ = 197255659639680.

The previous prime is 217552112208623. The next prime is 217552112208679. The reversal of 217552112208673 is 376802211255712.

217552112208673 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 217552112208673 - 2³⁷ = 217414673255201 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 217552112208673.

It is not an unprimeable number, because it can be changed into a prime (217552112208679) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 79062568 + ... + 81767926.

It is an arithmetic number, because the mean of its divisors is an integer number (14872026733200).

Almost surely, 2^{217552112208673} is an apocalyptic number.

It is an amenable number.

217552112208673 is a deficient number, since it is larger than the sum of its proper divisors (20400315522527).

217552112208673 is a wasteful number, since it uses less digits than its factorization.

217552112208673 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2724552.

The product of its (nonzero) digits is 2822400, while the sum is 52.

The spelling of 217552112208673 in words is "two hundred seventeen trillion, five hundred fifty-two billion, one hundred twelve million, two hundred eight thousand, six hundred seventy-three".