204130032500 has 60 divisors (see below), whose sum is σ = 446576202996. Its totient is φ = 81618240000.

The previous prime is 204130032487. The next prime is 204130032511. The reversal of 204130032500 is 5230031402.

It is a happy number.

It can be written as a sum of positive squares in 10 ways, for example, as 148634923024 + 55495109476 = 385532^2 + 235574^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 6536924 + ... + 6568076.

Almost surely, 2^204130032500 is an apocalyptic number.

204130032500 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 204130032500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (223288101498).

204130032500 is an abundant number, since it is smaller than the sum of its proper divisors (242446170496).

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

204130032500 is a wasteful number, since it uses less digits than its factorization.

204130032500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33798 (or 33781 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 20.

Adding to 204130032500 its reverse (5230031402), we get a palindrome (209360063902).

The spelling of 204130032500 in words is "two hundred four billion, one hundred thirty million, thirty-two thousand, five hundred".