204044664040 has 64 divisors (see below), whose sum is σ = 526540498560. Its totient is φ = 69710941440.

The previous prime is 204044664029. The next prime is 204044664041. The reversal of 204044664040 is 40466440402.

It is a junction number, because it is equal to n+sod(n) for n = 204044663987 and 204044664005.

It is not an unprimeable number, because it can be changed into a prime (204044664041) 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 15 ways as a sum of consecutive naturals, for example, 1208271 + ... + 1366750.

It is an arithmetic number, because the mean of its divisors is an integer number (8227195290).

Almost surely, 2^204044664040 is an apocalyptic number.

204044664040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

204044664040 is an abundant number, since it is smaller than the sum of its proper divisors (322495834520).

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

204044664040 is a wasteful number, since it uses less digits than its factorization.

204044664040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2575322 (or 2575318 counting only the distinct ones).

The product of its (nonzero) digits is 73728, while the sum is 34.

The spelling of 204044664040 in words is "two hundred four billion, forty-four million, six hundred sixty-four thousand, forty".