204423000000 has 196 divisors, whose sum is σ = 676087752216. Its totient is φ = 54512000000.

The previous prime is 204422999971. The next prime is 204423000011. The reversal of 204423000000 is 324402.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 2965930 + ... + 3034070.

Almost surely, 2^204423000000 is an apocalyptic number.

204423000000 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 204423000000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (338043876108).

204423000000 is an abundant number, since it is smaller than the sum of its proper divisors (471664752216).

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

204423000000 is an frugal number, since it uses more digits than its factorization.

204423000000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68186 (or 68151 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 15.

Adding to 204423000000 its reverse (324402), we get a palindrome (204423324402).

The spelling of 204423000000 in words is "two hundred four billion, four hundred twenty-three million", and thus it is an aban number.