217936116233279 has 16 divisors (see below), whose sum is σ = 224754673780224. Its totient is φ = 211225649896800.

The previous prime is 217936116233233. The next prime is 217936116233291. The reversal of 217936116233279 is 972332611639712.

It is a cyclic number.

It is not a de Polignac number, because 217936116233279 - 2²⁰ = 217936115184703 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (217936116233299) 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, 6388889 + ... + 21833234.

It is an arithmetic number, because the mean of its divisors is an integer number (14047167111264).

Almost surely, 2^{217936116233279} is an apocalyptic number.

217936116233279 is a deficient number, since it is larger than the sum of its proper divisors (6818557546945).

217936116233279 is a wasteful number, since it uses less digits than its factorization.

217936116233279 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28224038.

The product of its digits is 30862944, while the sum is 62.

The spelling of 217936116233279 in words is "two hundred seventeen trillion, nine hundred thirty-six billion, one hundred sixteen million, two hundred thirty-three thousand, two hundred seventy-nine".