204244310656 has 64 divisors (see below), whose sum is σ = 421317232200. Its totient is φ = 98508533760.

The previous prime is 204244310651. The next prime is 204244310687. The reversal of 204244310656 is 656013442402.

204244310656 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 204195534400 + 48776256 = 451880^2 + 6984^2 .

It is a tau number, because it is divible by the number of its divisors (64).

It is not an unprimeable number, because it can be changed into a prime (204244310651) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 4032046 + ... + 4082386.

Almost surely, 2^204244310656 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 204244310656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (210658616100).

204244310656 is an abundant number, since it is smaller than the sum of its proper divisors (217072921544).

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

204244310656 is a wasteful number, since it uses less digits than its factorization.

204244310656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51477 (or 51465 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 37.

The spelling of 204244310656 in words is "two hundred four billion, two hundred forty-four million, three hundred ten thousand, six hundred fifty-six".