204442515100 has 72 divisors (see below), whose sum is σ = 485934679440. Its totient is φ = 74312555520.

The previous prime is 204442515089. The next prime is 204442515113. The reversal of 204442515100 is 1515244402.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2024154 + ... + 2122753.

It is an arithmetic number, because the mean of its divisors is an integer number (6749092770).

Almost surely, 2^204442515100 is an apocalyptic number.

204442515100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

204442515100 is an abundant number, since it is smaller than the sum of its proper divisors (281492164340).

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

204442515100 is a wasteful number, since it uses less digits than its factorization.

204442515100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4146967 (or 4146960 counting only the distinct ones).

The product of its (nonzero) digits is 6400, while the sum is 28.

Adding to 204442515100 its reverse (1515244402), we get a palindrome (205957759502).

The spelling of 204442515100 in words is "two hundred four billion, four hundred forty-two million, five hundred fifteen thousand, one hundred".