866575599213 has 4 divisors (see below), whose sum is σ = 1155434132288. Its totient is φ = 577717066140.

The previous prime is 866575599191. The next prime is 866575599223. The reversal of 866575599213 is 312995575668.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 866575599213 - 2²⁶ = 866508490349 is a prime.

It is a super-3 number, since 3×866575599213³ (a number of 37 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (866575599223) 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, 144429266533 + ... + 144429266538.

It is an arithmetic number, because the mean of its divisors is an integer number (288858533072).

Almost surely, 2^866575599213 is an apocalyptic number.

It is an amenable number.

866575599213 is a deficient number, since it is larger than the sum of its proper divisors (288858533075).

866575599213 is a wasteful number, since it uses less digits than its factorization.

866575599213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 288858533074.

The product of its digits is 122472000, while the sum is 66.

The spelling of 866575599213 in words is "eight hundred sixty-six billion, five hundred seventy-five million, five hundred ninety-nine thousand, two hundred thirteen".