204253529568 has 288 divisors, whose sum is σ = 636581369088. Its totient is φ = 56672870400.

The previous prime is 204253529549. The next prime is 204253529651. The reversal of 204253529568 is 865925352402.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a self number, because there is not a number n which added to its sum of digits gives 204253529568.

It is a congruent number.

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, 24572133 + ... + 24580443.

It is an arithmetic number, because the mean of its divisors is an integer number (2210351976).

Almost surely, 2^204253529568 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 204253529568, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (318290684544).

204253529568 is an abundant number, since it is smaller than the sum of its proper divisors (432327839520).

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

204253529568 is a wasteful number, since it uses less digits than its factorization.

204253529568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8426 (or 8381 counting only the distinct ones).

The product of its (nonzero) digits is 5184000, while the sum is 51.

The spelling of 204253529568 in words is "two hundred four billion, two hundred fifty-three million, five hundred twenty-nine thousand, five hundred sixty-eight".