20020042440000 has 420 divisors, whose sum is σ = 71726404578400. Its totient is φ = 5337221760000.

The previous prime is 20020042439993. The next prime is 20020042440001. The reversal of 20020042440000 is 4424002002.

20020042440000 is a `hidden beast` number, since 2 + 0 + 0 + 200 + 424 + 40 + 0 + 0 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20020042440001) by changing a digit.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 2231635515 + ... + 2231644485.

Almost surely, 2^{20020042440000} is an apocalyptic number.

20020042440000 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 20020042440000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35863202289200).

20020042440000 is an abundant number, since it is smaller than the sum of its proper divisors (51706362138400).

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

20020042440000 is an equidigital number, since it uses as much as digits as its factorization.

20020042440000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15208 (or 15180 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 18.

Adding to 20020042440000 its reverse (4424002002), we get a palindrome (20024466442002).

The spelling of 20020042440000 in words is "twenty trillion, twenty billion, forty-two million, four hundred forty thousand".