204040040200 has 24 divisors (see below), whose sum is σ = 474393093930. Its totient is φ = 81616016000.

The previous prime is 204040040179. The next prime is 204040040203. The reversal of 204040040200 is 2040040402.

It can be written as a sum of positive squares in 3 ways, for example, as 130816762596 + 73223277604 = 361686^2 + 270598^2 .

It is not an unprimeable number, because it can be changed into a prime (204040040203) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 510099901 + ... + 510100300.

Almost surely, 2^204040040200 is an apocalyptic number.

204040040200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

204040040200 is an abundant number, since it is smaller than the sum of its proper divisors (270353053730).

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

204040040200 is a wasteful number, since it uses less digits than its factorization.

204040040200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1020200217 (or 1020200208 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 16.

Adding to 204040040200 its reverse (2040040402), we get a palindrome (206080080602).

The spelling of 204040040200 in words is "two hundred four billion, forty million, forty thousand, two hundred".