217089837214207 has 32 divisors (see below), whose sum is σ = 222871190774400. Its totient is φ = 211374462394368.

The previous prime is 217089837214141. The next prime is 217089837214267. The reversal of 217089837214207 is 702412738980712.

It is a cyclic number.

It is not a de Polignac number, because 217089837214207 - 2¹⁵ = 217089837181439 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 (217089837214267) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 27004578294 + ... + 27004586332.

It is an arithmetic number, because the mean of its divisors is an integer number (6964724711700).

Almost surely, 2^{217089837214207} is an apocalyptic number.

217089837214207 is a deficient number, since it is larger than the sum of its proper divisors (5781353560193).

217089837214207 is a wasteful number, since it uses less digits than its factorization.

217089837214207 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11875.

The product of its (nonzero) digits is 18966528, while the sum is 61.

The spelling of 217089837214207 in words is "two hundred seventeen trillion, eighty-nine billion, eight hundred thirty-seven million, two hundred fourteen thousand, two hundred seven".