204202990404 has 144 divisors (see below), whose sum is σ = 625594814208. Its totient is φ = 54826113024.

The previous prime is 204202990367. The next prime is 204202990451. The reversal of 204202990404 is 404099202402.

204202990404 is a `hidden beast` number, since 204 + 20 + 29 + 9 + 0 + 404 = 666.

It is a super-2 number, since 2×204202990404² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2734912 + ... + 2808584.

It is an arithmetic number, because the mean of its divisors is an integer number (4344408432).

Almost surely, 2^204202990404 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 204202990404, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (312797407104).

204202990404 is an abundant number, since it is smaller than the sum of its proper divisors (421391823804).

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

204202990404 is a wasteful number, since it uses less digits than its factorization.

204202990404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74354 (or 74349 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 36.

The spelling of 204202990404 in words is "two hundred four billion, two hundred two million, nine hundred ninety thousand, four hundred four".