205304503000 has 64 divisors (see below), whose sum is σ = 481588099200. Its totient is φ = 81920851200.

The previous prime is 205304502989. The next prime is 205304503003. The reversal of 205304503000 is 305403502.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (205304503003) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 158017 + ... + 659983.

It is an arithmetic number, because the mean of its divisors is an integer number (7524814050).

Almost surely, 2^205304503000 is an apocalyptic number.

205304503000 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 205304503000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (240794049600).

205304503000 is an abundant number, since it is smaller than the sum of its proper divisors (276283596200).

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

205304503000 is a wasteful number, since it uses less digits than its factorization.

205304503000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 502397 (or 502383 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 22.

Adding to 205304503000 its reverse (305403502), we get a palindrome (205609906502).

The spelling of 205304503000 in words is "two hundred five billion, three hundred four million, five hundred three thousand".