204500540000 has 120 divisors (see below), whose sum is σ = 507809205288. Its totient is φ = 81034880000.

The previous prime is 204500539963. The next prime is 204500540017. The reversal of 204500540000 is 45005402.

It is a happy number.

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, 2092220 + ... + 2187780.

Almost surely, 2^204500540000 is an apocalyptic number.

204500540000 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 204500540000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (253904602644).

204500540000 is an abundant number, since it is smaller than the sum of its proper divisors (303308665288).

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

204500540000 is an equidigital number, since it uses as much as digits as its factorization.

204500540000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95698 (or 95675 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 20.

Adding to 204500540000 its reverse (45005402), we get a palindrome (204545545402).

The spelling of 204500540000 in words is "two hundred four billion, five hundred million, five hundred forty thousand".