204030400100 has 18 divisors (see below), whose sum is σ = 442745968434. Its totient is φ = 81612160000.

The previous prime is 204030400099. The next prime is 204030400127. The reversal of 204030400100 is 1004030402.

It can be written as a sum of positive squares in 3 ways, for example, as 32135581696 + 171894818404 = 179264^2 + 414602^2 .

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 1020151901 + ... + 1020152100.

Almost surely, 2^204030400100 is an apocalyptic number.

204030400100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

204030400100 is an abundant number, since it is smaller than the sum of its proper divisors (238715568334).

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

204030400100 is a wasteful number, since it uses less digits than its factorization.

204030400100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2040304015 (or 2040304008 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 14.

Adding to 204030400100 its reverse (1004030402), we get a palindrome (205034430502).

The spelling of 204030400100 in words is "two hundred four billion, thirty million, four hundred thousand, one hundred".