204545311000 has 128 divisors (see below), whose sum is σ = 485917286400. Its totient is φ = 80582947200.

The previous prime is 204545310997. The next prime is 204545311021. The reversal of 204545311000 is 113545402.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 17647207 + ... + 17658793.

It is an arithmetic number, because the mean of its divisors is an integer number (3796228800).

Almost surely, 2^204545311000 is an apocalyptic number.

204545311000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 204545311000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (242958643200).

204545311000 is an abundant number, since it is smaller than the sum of its proper divisors (281371975400).

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

204545311000 is a wasteful number, since it uses less digits than its factorization.

204545311000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11874 (or 11860 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 25.

Adding to 204545311000 its reverse (113545402), we get a palindrome (204658856402).

The spelling of 204545311000 in words is "two hundred four billion, five hundred forty-five million, three hundred eleven thousand".