858966326388 has 120 divisors (see below), whose sum is σ = 2378291110272. Its totient is φ = 269400888576.

The previous prime is 858966326357. The next prime is 858966326431. The reversal of 858966326388 is 883623669858.

858966326388 is a `hidden beast` number, since 8 + 589 + 6 + 6 + 3 + 2 + 6 + 38 + 8 = 666.

It is a super-2 number, since 2×858966326388² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 20507395 + ... + 20549237.

Almost surely, 2^858966326388 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 858966326388, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1189145555136).

858966326388 is an abundant number, since it is smaller than the sum of its proper divisors (1519324783884).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

858966326388 is a wasteful number, since it uses less digits than its factorization.

858966326388 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45603 (or 45592 counting only the distinct ones).

The product of its digits is 716636160, while the sum is 72.

The spelling of 858966326388 in words is "eight hundred fifty-eight billion, nine hundred sixty-six million, three hundred twenty-six thousand, three hundred eighty-eight".