204242621444 has 12 divisors (see below), whose sum is σ = 357503191500. Its totient is φ = 102098852448.

The previous prime is 204242621381. The next prime is 204242621447. The reversal of 204242621444 is 444126242402.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 152912281600 + 51330339844 = 391040^2 + 226562^2 .

It is not an unprimeable number, because it can be changed into a prime (204242621447) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5594099 + ... + 5630490.

It is an arithmetic number, because the mean of its divisors is an integer number (29791932625).

Almost surely, 2^204242621444 is an apocalyptic number.

It is an amenable number.

204242621444 is a deficient number, since it is larger than the sum of its proper divisors (153260570056).

204242621444 is a wasteful number, since it uses less digits than its factorization.

204242621444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11229142 (or 11229140 counting only the distinct ones).

The product of its (nonzero) digits is 98304, while the sum is 35.

Adding to 204242621444 its reverse (444126242402), we get a palindrome (648368863846).

The spelling of 204242621444 in words is "two hundred four billion, two hundred forty-two million, six hundred twenty-one thousand, four hundred forty-four".