204203104400 has 60 divisors (see below), whose sum is σ = 497318549412. Its totient is φ = 80562309120.

The previous prime is 204203104397. The next prime is 204203104403. The reversal of 204203104400 is 4401302402.

It is an interprime number because it is at equal distance from previous prime (204203104397) and next prime (204203104403).

It can be written as a sum of positive squares in 6 ways, for example, as 32671285504 + 171531818896 = 180752^2 + 414164^2 .

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

It is not an unprimeable number, because it can be changed into a prime (204203104403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3467429 + ... + 3525828.

Almost surely, 2^204203104400 is an apocalyptic number.

204203104400 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

204203104400 is an abundant number, since it is smaller than the sum of its proper divisors (293115445012).

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

204203104400 is a wasteful number, since it uses less digits than its factorization.

204203104400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6993348 (or 6993337 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 20.

Adding to 204203104400 its reverse (4401302402), we get a palindrome (208604406802).

The spelling of 204203104400 in words is "two hundred four billion, two hundred three million, one hundred four thousand, four hundred".