20550244240000 has 320 divisors, whose sum is σ = 53582573088000. Its totient is φ = 7833284096000.

The previous prime is 20550244239991. The next prime is 20550244240063. The reversal of 20550244240000 is 4244205502.

It is a tau number, because it is divible by the number of its divisors (320).

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 494939241 + ... + 494980759.

It is an arithmetic number, because the mean of its divisors is an integer number (167445540900).

Almost surely, 2^{20550244240000} is an apocalyptic number.

20550244240000 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 20550244240000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26791286544000).

20550244240000 is an abundant number, since it is smaller than the sum of its proper divisors (33032328848000).

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

20550244240000 is an equidigital number, since it uses as much as digits as its factorization.

20550244240000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41845 (or 41818 counting only the distinct ones).

The product of its (nonzero) digits is 12800, while the sum is 28.

Adding to 20550244240000 its reverse (4244205502), we get a palindrome (20554488445502).

The spelling of 20550244240000 in words is "twenty trillion, five hundred fifty billion, two hundred forty-four million, two hundred forty thousand".