204012044240 has 80 divisors (see below), whose sum is σ = 500512608000. Its totient is φ = 77179677696.

The previous prime is 204012044227. The next prime is 204012044251. The reversal of 204012044240 is 42440210402.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 459140 + ... + 786659.

It is an arithmetic number, because the mean of its divisors is an integer number (6256407600).

Almost surely, 2^204012044240 is an apocalyptic number.

204012044240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

204012044240 is an abundant number, since it is smaller than the sum of its proper divisors (296500563760).

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

204012044240 is a wasteful number, since it uses less digits than its factorization.

204012044240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1245924 (or 1245918 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 23.

Adding to 204012044240 its reverse (42440210402), we get a palindrome (246452254642).

The spelling of 204012044240 in words is "two hundred four billion, twelve million, forty-four thousand, two hundred forty".