20032143400220 has 192 divisors, whose sum is σ = 49797069041664. Its totient is φ = 6626402795520.

The previous prime is 20032143400189. The next prime is 20032143400229. The reversal of 20032143400220 is 2200434123002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20032143400229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 354353597 + ... + 354410123.

It is an arithmetic number, because the mean of its divisors is an integer number (259359734592).

Almost surely, 2^{20032143400220} is an apocalyptic number.

20032143400220 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 20032143400220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24898534520832).

20032143400220 is an abundant number, since it is smaller than the sum of its proper divisors (29764925641444).

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

20032143400220 is a wasteful number, since it uses less digits than its factorization.

20032143400220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57268 (or 57266 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 23.

Adding to 20032143400220 its reverse (2200434123002), we get a palindrome (22232577523222).

The spelling of 20032143400220 in words is "twenty trillion, thirty-two billion, one hundred forty-three million, four hundred thousand, two hundred twenty".