659398416217 has 4 divisors (see below), whose sum is σ = 659400257716. Its totient is φ = 659396574720.

The previous prime is 659398416199. The next prime is 659398416223. The reversal of 659398416217 is 712614893956.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 255238154521 + 404160261696 = 505211^2 + 635736^2 .

It is a cyclic number.

It is not a de Polignac number, because 659398416217 - 2³⁵ = 625038677849 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (659398416277) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 190668 + ... + 1164109.

It is an arithmetic number, because the mean of its divisors is an integer number (164850064429).

Almost surely, 2^659398416217 is an apocalyptic number.

It is an amenable number.

659398416217 is a deficient number, since it is larger than the sum of its proper divisors (1841499).

659398416217 is a wasteful number, since it uses less digits than its factorization.

659398416217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1841498.

The product of its digits is 19595520, while the sum is 61.

The spelling of 659398416217 in words is "six hundred fifty-nine billion, three hundred ninety-eight million, four hundred sixteen thousand, two hundred seventeen".