204171939500 has 48 divisors (see below), whose sum is σ = 446151888000. Its totient is φ = 81624752000.

The previous prime is 204171939487. The next prime is 204171939551. The reversal of 204171939500 is 5939171402.

204171939500 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 826376 + ... + 1044624.

It is an arithmetic number, because the mean of its divisors is an integer number (9294831000).

Almost surely, 2^204171939500 is an apocalyptic number.

204171939500 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

204171939500 is an abundant number, since it is smaller than the sum of its proper divisors (241979948500).

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

204171939500 is a wasteful number, since it uses less digits than its factorization.

204171939500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 220139 (or 220127 counting only the distinct ones).

The product of its (nonzero) digits is 68040, while the sum is 41.

The spelling of 204171939500 in words is "two hundred four billion, one hundred seventy-one million, nine hundred thirty-nine thousand, five hundred".