665228384316 has 96 divisors (see below), whose sum is σ = 1795084435200. Its totient is φ = 212782852800.

The previous prime is 665228384311. The next prime is 665228384323. The reversal of 665228384316 is 613483822566.

665228384316 is a `hidden beast` number, since 6 + 6 + 5 + 228 + 384 + 31 + 6 = 666.

665228384316 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (665228384311) 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, 141010 + ... + 1162041.

It is an arithmetic number, because the mean of its divisors is an integer number (18698796200).

Almost surely, 2^665228384316 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 665228384316, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (897542217600).

665228384316 is an abundant number, since it is smaller than the sum of its proper divisors (1129856050884).

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

665228384316 is a wasteful number, since it uses less digits than its factorization.

665228384316 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1303256 (or 1303248 counting only the distinct ones).

The product of its digits is 9953280, while the sum is 54.

The spelling of 665228384316 in words is "six hundred sixty-five billion, two hundred twenty-eight million, three hundred eighty-four thousand, three hundred sixteen".