216688867017 has 16 divisors (see below), whose sum is σ = 336422609280. Its totient is φ = 121485940992.

The previous prime is 216688867007. The next prime is 216688867111. The reversal of 216688867017 is 710768886612.

It is a happy number.

It is not a de Polignac number, because 216688867017 - 2¹⁴ = 216688850633 is a prime.

It is a super-2 number, since 2×216688867017² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (216688867007) 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, 97343392 + ... + 97345617.

It is an arithmetic number, because the mean of its divisors is an integer number (21026413080).

Almost surely, 2^216688867017 is an apocalyptic number.

It is an amenable number.

216688867017 is a deficient number, since it is larger than the sum of its proper divisors (119733742263).

216688867017 is a wasteful number, since it uses less digits than its factorization.

216688867017 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 194689072.

The product of its (nonzero) digits is 10838016, while the sum is 60.

The spelling of 216688867017 in words is "two hundred sixteen billion, six hundred eighty-eight million, eight hundred sixty-seven thousand, seventeen".