285921839012 has 12 divisors (see below), whose sum is σ = 500383416540. Its totient is φ = 142955148576.

The previous prime is 285921839003. The next prime is 285921839041. The reversal of 285921839012 is 210938129582.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 242954353216 + 42967485796 = 492904^2 + 207286^2 .

It is a super-2 number, since 2×285921839012² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1330283 + ... + 1530194.

It is an arithmetic number, because the mean of its divisors is an integer number (41698618045).

Almost surely, 2^285921839012 is an apocalyptic number.

It is an amenable number.

285921839012 is a deficient number, since it is larger than the sum of its proper divisors (214461577528).

285921839012 is a wasteful number, since it uses less digits than its factorization.

285921839012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2885470 (or 2885468 counting only the distinct ones).

The product of its (nonzero) digits is 622080, while the sum is 50.

The spelling of 285921839012 in words is "two hundred eighty-five billion, nine hundred twenty-one million, eight hundred thirty-nine thousand, twelve".