20201240441420 has 96 divisors (see below), whose sum is σ = 46502806553280. Its totient is φ = 7337259417600.

The previous prime is 20201240441407. The next prime is 20201240441453. The reversal of 20201240441420 is 2414404210202.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 20201240441420.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 11998595 + ... + 13578245.

It is an arithmetic number, because the mean of its divisors is an integer number (484404234930).

Almost surely, 2^{20201240441420} is an apocalyptic number.

20201240441420 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 20201240441420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23251403276640).

20201240441420 is an abundant number, since it is smaller than the sum of its proper divisors (26301566111860).

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

20201240441420 is a wasteful number, since it uses less digits than its factorization.

20201240441420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1581003 (or 1581001 counting only the distinct ones).

The product of its (nonzero) digits is 4096, while the sum is 26.

Adding to 20201240441420 its reverse (2414404210202), we get a palindrome (22615644651622).

The spelling of 20201240441420 in words is "twenty trillion, two hundred one billion, two hundred forty million, four hundred forty-one thousand, four hundred twenty".