285521211696 has 240 divisors, whose sum is σ = 888654551040. Its totient is φ = 78671577600.

The previous prime is 285521211683. The next prime is 285521211719. The reversal of 285521211696 is 696112125582.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 74140171 + ... + 74144021.

It is an arithmetic number, because the mean of its divisors is an integer number (3702727296).

Almost surely, 2^285521211696 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 285521211696, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (444327275520).

285521211696 is an abundant number, since it is smaller than the sum of its proper divisors (603133339344).

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

285521211696 is a wasteful number, since it uses less digits than its factorization.

285521211696 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4992 (or 4979 counting only the distinct ones).

The product of its digits is 518400, while the sum is 48.

The spelling of 285521211696 in words is "two hundred eighty-five billion, five hundred twenty-one million, two hundred eleven thousand, six hundred ninety-six".