204411365540 has 48 divisors (see below), whose sum is σ = 433792161264. Its totient is φ = 80906342400.

The previous prime is 204411365539. The next prime is 204411365549. The reversal of 204411365540 is 45563114402.

It can be written as a sum of positive squares in 8 ways, for example, as 3583698496 + 200827667044 = 59864^2 + 448138^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 204411365540.

It is not an unprimeable number, because it can be changed into a prime (204411365549) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 621680 + ... + 891800.

It is an arithmetic number, because the mean of its divisors is an integer number (9037336693).

Almost surely, 2^204411365540 is an apocalyptic number.

204411365540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

204411365540 is an abundant number, since it is smaller than the sum of its proper divisors (229380795724).

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

204411365540 is a wasteful number, since it uses less digits than its factorization.

204411365540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 270528 (or 270526 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 35.

Adding to 204411365540 its reverse (45563114402), we get a palindrome (249974479942).

The spelling of 204411365540 in words is "two hundred four billion, four hundred eleven million, three hundred sixty-five thousand, five hundred forty".