285817829949234 has 96 divisors (see below), whose sum is σ = 677486623110336. Its totient is φ = 86365999042560.

The previous prime is 285817829949233. The next prime is 285817829949251. The reversal of 285817829949234 is 432949928718582.

It is a happy number.

285817829949234 is a `hidden beast` number, since 2 + 8 + 5 + 8 + 1 + 7 + 8 + 2 + 99 + 492 + 34 = 666.

It is not an unprimeable number, because it can be changed into a prime (285817829949233) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 102241974 + ... + 105000270.

It is an arithmetic number, because the mean of its divisors is an integer number (7057152324066).

Almost surely, 2^{285817829949234} is an apocalyptic number.

285817829949234 is an abundant number, since it is smaller than the sum of its proper divisors (391668793161102).

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

285817829949234 is a wasteful number, since it uses less digits than its factorization.

285817829949234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2759800 (or 2759797 counting only the distinct ones).

The product of its digits is 5016453120, while the sum is 81.

The spelling of 285817829949234 in words is "two hundred eighty-five trillion, eight hundred seventeen billion, eight hundred twenty-nine million, nine hundred forty-nine thousand, two hundred thirty-four".