204150515520 has 224 divisors, whose sum is σ = 747969251328. Its totient is φ = 46209779712.

The previous prime is 204150515509. The next prime is 204150515549. The reversal of 204150515520 is 25515051402.

It is a tau number, because it is divible by the number of its divisors (224).

It is a Harshad number since it is a multiple of its sum of digits (30).

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, 544687 + ... + 839633.

Almost surely, 2^204150515520 is an apocalyptic number.

204150515520 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 204150515520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (373984625664).

204150515520 is an abundant number, since it is smaller than the sum of its proper divisors (543818735808).

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

204150515520 is a wasteful number, since it uses less digits than its factorization.

204150515520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 295077 (or 295067 counting only the distinct ones).

The product of its (nonzero) digits is 10000, while the sum is 30.

Adding to 204150515520 its reverse (25515051402), we get a palindrome (229665566922).

The spelling of 204150515520 in words is "two hundred four billion, one hundred fifty million, five hundred fifteen thousand, five hundred twenty".