223665998328 has 256 divisors, whose sum is σ = 656881488000. Its totient is φ = 70406848512.

The previous prime is 223665998263. The next prime is 223665998333. The reversal of 223665998328 is 823899566322.

223665998328 is a `hidden beast` number, since 2 + 2 + 3 + 6 + 6 + 599 + 8 + 32 + 8 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 131799976 + ... + 131801672.

Almost surely, 2^223665998328 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 223665998328, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (328440744000).

223665998328 is an abundant number, since it is smaller than the sum of its proper divisors (433215489672).

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

223665998328 is a wasteful number, since it uses less digits than its factorization.

223665998328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2191 (or 2181 counting only the distinct ones).

The product of its digits is 67184640, while the sum is 63.

The spelling of 223665998328 in words is "two hundred twenty-three billion, six hundred sixty-five million, nine hundred ninety-eight thousand, three hundred twenty-eight".