285888069138 has 48 divisors (see below), whose sum is σ = 664346854080. Its totient is φ = 80343207360.

The previous prime is 285888069119. The next prime is 285888069167. The reversal of 285888069138 is 831960888582.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 758373 + ... + 1070936.

It is an arithmetic number, because the mean of its divisors is an integer number (13840559460).

Almost surely, 2^285888069138 is an apocalyptic number.

285888069138 is an abundant number, since it is smaller than the sum of its proper divisors (378458784942).

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

285888069138 is a wasteful number, since it uses less digits than its factorization.

285888069138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1829443 (or 1829382 counting only the distinct ones).

The product of its (nonzero) digits is 53084160, while the sum is 66.

The spelling of 285888069138 in words is "two hundred eighty-five billion, eight hundred eighty-eight million, sixty-nine thousand, one hundred thirty-eight".