204155521322532 has 144 divisors (see below), whose sum is σ = 542990434129920. Its totient is φ = 59509073520000.

The previous prime is 204155521322531. The next prime is 204155521322561. The reversal of 204155521322532 is 235223125551402.

It is not an unprimeable number, because it can be changed into a prime (204155521322531) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1693459657 + ... + 1693580207.

It is an arithmetic number, because the mean of its divisors is an integer number (3770766903680).

Almost surely, 2^{204155521322532} 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 204155521322532, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (271495217064960).

204155521322532 is an abundant number, since it is smaller than the sum of its proper divisors (338834912807388).

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

204155521322532 is a wasteful number, since it uses less digits than its factorization.

204155521322532 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 164554 (or 164539 counting only the distinct ones).

The product of its (nonzero) digits is 720000, while the sum is 42.

Adding to 204155521322532 its reverse (235223125551402), we get a palindrome (439378646873934).

The spelling of 204155521322532 in words is "two hundred four trillion, one hundred fifty-five billion, five hundred twenty-one million, three hundred twenty-two thousand, five hundred thirty-two".