285816039788 has 12 divisors (see below), whose sum is σ = 500184987792. Its totient is φ = 142906043280.

The previous prime is 285816039787. The next prime is 285816039829. The reversal of 285816039788 is 887930618582.

It is a hoax number, since the sum of its digits (65) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (285816039787) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 140720 + ... + 769047.

It is an arithmetic number, because the mean of its divisors is an integer number (41682082316).

Almost surely, 2^285816039788 is an apocalyptic number.

It is an amenable number.

285816039788 is a deficient number, since it is larger than the sum of its proper divisors (214368948004).

285816039788 is a wasteful number, since it uses less digits than its factorization.

285816039788 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 988312 (or 988310 counting only the distinct ones).

The product of its (nonzero) digits is 46448640, while the sum is 65.

The spelling of 285816039788 in words is "two hundred eighty-five billion, eight hundred sixteen million, thirty-nine thousand, seven hundred eighty-eight".