285856406835 has 24 divisors (see below), whose sum is σ = 485856986736. Its totient is φ = 143488704000.

The previous prime is 285856406789. The next prime is 285856406839. The reversal of 285856406835 is 538604658582.

It is a happy number.

285856406835 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 285856406835 - 2⁸ = 285856406579 is a prime.

It is not an unprimeable number, because it can be changed into a prime (285856406839) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 32966416 + ... + 32975085.

It is an arithmetic number, because the mean of its divisors is an integer number (20244041114).

Almost surely, 2^285856406835 is an apocalyptic number.

285856406835 is a deficient number, since it is larger than the sum of its proper divisors (200000579901).

285856406835 is a wasteful number, since it uses less digits than its factorization.

285856406835 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65941543 (or 65941526 counting only the distinct ones).

The product of its (nonzero) digits is 55296000, while the sum is 60.

The spelling of 285856406835 in words is "two hundred eighty-five billion, eight hundred fifty-six million, four hundred six thousand, eight hundred thirty-five".