204244315380 has 144 divisors (see below), whose sum is σ = 708386724864. Its totient is φ = 46662013440.

The previous prime is 204244315369. The next prime is 204244315397. The reversal of 204244315380 is 83513442402.

204244315380 is a `hidden beast` number, since 2 + 0 + 4 + 244 + 31 + 5 + 380 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

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 47 ways as a sum of consecutive naturals, for example, 2662360 + ... + 2738000.

It is an arithmetic number, because the mean of its divisors is an integer number (4919352256).

Almost surely, 2^204244315380 is an apocalyptic number.

204244315380 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 204244315380, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (354193362432).

204244315380 is an abundant number, since it is smaller than the sum of its proper divisors (504142409484).

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

204244315380 is a wasteful number, since it uses less digits than its factorization.

204244315380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77806 (or 77801 counting only the distinct ones).

The product of its (nonzero) digits is 92160, while the sum is 36.

Adding to 204244315380 its reverse (83513442402), we get a palindrome (287757757782).

The spelling of 204244315380 in words is "two hundred four billion, two hundred forty-four million, three hundred fifteen thousand, three hundred eighty".