285165812022 has 64 divisors (see below), whose sum is σ = 724590096384. Its totient is φ = 72782478720.

The previous prime is 285165812011. The next prime is 285165812081. The reversal of 285165812022 is 220218561582.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8406973 + ... + 8440824.

It is an arithmetic number, because the mean of its divisors is an integer number (11321720256).

Almost surely, 2^285165812022 is an apocalyptic number.

285165812022 is an abundant number, since it is smaller than the sum of its proper divisors (439424284362).

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

285165812022 is a wasteful number, since it uses less digits than its factorization.

285165812022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16847853.

The product of its (nonzero) digits is 153600, while the sum is 42.

The spelling of 285165812022 in words is "two hundred eighty-five billion, one hundred sixty-five million, eight hundred twelve thousand, twenty-two".