20204044332400 has 120 divisors (see below), whose sum is σ = 48719072632464. Its totient is φ = 8051848089600.

The previous prime is 20204044332397. The next prime is 20204044332401. The reversal of 20204044332400 is 423344040202.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20204044332401) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1356241752 + ... + 1356256648.

Almost surely, 2^{20204044332400} is an apocalyptic number.

20204044332400 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 20204044332400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24359536316232).

20204044332400 is an abundant number, since it is smaller than the sum of its proper divisors (28515028300064).

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

20204044332400 is a wasteful number, since it uses less digits than its factorization.

20204044332400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27179 (or 27168 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 28.

Adding to 20204044332400 its reverse (423344040202), we get a palindrome (20627388372602).

The spelling of 20204044332400 in words is "twenty trillion, two hundred four billion, forty-four million, three hundred thirty-two thousand, four hundred".