285685086288 has 160 divisors (see below), whose sum is σ = 892828569600. Its totient is φ = 76976782848.

The previous prime is 285685086257. The next prime is 285685086289. The reversal of 285685086288 is 882680586582.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (285685086289) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 78073 + ... + 759911.

It is an arithmetic number, because the mean of its divisors is an integer number (5580178560).

Almost surely, 2^285685086288 is an apocalyptic number.

285685086288 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 285685086288, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (446414284800).

285685086288 is an abundant number, since it is smaller than the sum of its proper divisors (607143483312).

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

285685086288 is a wasteful number, since it uses less digits than its factorization.

285685086288 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 681929 (or 681923 counting only the distinct ones).

The product of its (nonzero) digits is 117964800, while the sum is 66.

The spelling of 285685086288 in words is "two hundred eighty-five billion, six hundred eighty-five million, eighty-six thousand, two hundred eighty-eight".