8285314831220 has 144 divisors (see below), whose sum is σ = 21558752474112. Its totient is φ = 2657570227200.

The previous prime is 8285314831109. The next prime is 8285314831259. The reversal of 8285314831220 is 221384135828.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1293245 + ... + 4271195.

It is an arithmetic number, because the mean of its divisors is an integer number (149713558848).

Almost surely, 2^{8285314831220} 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 8285314831220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10779376237056).

8285314831220 is an abundant number, since it is smaller than the sum of its proper divisors (13273437642892).

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

8285314831220 is a wasteful number, since it uses less digits than its factorization.

8285314831220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2978158 (or 2978149 counting only the distinct ones).

The product of its (nonzero) digits is 737280, while the sum is 47.

The spelling of 8285314831220 in words is "eight trillion, two hundred eighty-five billion, three hundred fourteen million, eight hundred thirty-one thousand, two hundred twenty".