204504561340 has 96 divisors (see below), whose sum is σ = 438537939840. Its totient is φ = 80094744576.

The previous prime is 204504561319. The next prime is 204504561353. The reversal of 204504561340 is 43165405402.

It is a junction number, because it is equal to n+sod(n) for n = 204504561296 and 204504561305.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 81702529 + ... + 81705031.

It is an arithmetic number, because the mean of its divisors is an integer number (4568103540).

Almost surely, 2^204504561340 is an apocalyptic number.

204504561340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

204504561340 is an abundant number, since it is smaller than the sum of its proper divisors (234033378500).

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

204504561340 is a wasteful number, since it uses less digits than its factorization.

204504561340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3031 (or 3029 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 34.

Adding to 204504561340 its reverse (43165405402), we get a palindrome (247669966742).

The spelling of 204504561340 in words is "two hundred four billion, five hundred four million, five hundred sixty-one thousand, three hundred forty".