204211000404 has 72 divisors (see below), whose sum is σ = 539374006080. Its totient is φ = 65022452352.

The previous prime is 204211000373. The next prime is 204211000457. The reversal of 204211000404 is 404000112402.

It is a Harshad number since it is a multiple of its sum of digits (18).

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, 445024 + ... + 778760.

It is an arithmetic number, because the mean of its divisors is an integer number (7491305640).

Almost surely, 2^204211000404 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 204211000404, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (269687003040).

204211000404 is an abundant number, since it is smaller than the sum of its proper divisors (335163005676).

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

204211000404 is a wasteful number, since it uses less digits than its factorization.

204211000404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 334509 (or 334504 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

Adding to 204211000404 its reverse (404000112402), we get a palindrome (608211112806).

The spelling of 204211000404 in words is "two hundred four billion, two hundred eleven million, four hundred four", and thus it is an aban number.