204173080878720 has 512 divisors, whose sum is σ = 693707744378880. Its totient is φ = 50900741193728.

The previous prime is 204173080878691. The next prime is 204173080878727. The reversal of 204173080878720 is 27878080371402.

It is not an unprimeable number, because it can be changed into a prime (204173080878727) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2978724769 + ... + 2978793311.

It is an arithmetic number, because the mean of its divisors is an integer number (1354897938240).

Almost surely, 2^{204173080878720} is an apocalyptic number.

204173080878720 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 204173080878720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (346853872189440).

204173080878720 is an abundant number, since it is smaller than the sum of its proper divisors (489534663500160).

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

204173080878720 is a wasteful number, since it uses less digits than its factorization.

204173080878720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69192 (or 69180 counting only the distinct ones).

The product of its (nonzero) digits is 8429568, while the sum is 57.

The spelling of 204173080878720 in words is "two hundred four trillion, one hundred seventy-three billion, eighty million, eight hundred seventy-eight thousand, seven hundred twenty".