20020240440400 has 60 divisors (see below), whose sum is σ = 48173665135644. Its totient is φ = 7995602944000.

The previous prime is 20020240440373. The next prime is 20020240440401. The reversal of 20020240440400 is 404404202002.

It can be written as a sum of positive squares in 6 ways, for example, as 492820848144 + 19527419592256 = 702012^2 + 4418984^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20020240440401) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 38784631 + ... + 39297430.

Almost surely, 2^{20020240440400} is an apocalyptic number.

20020240440400 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20020240440400 is an abundant number, since it is smaller than the sum of its proper divisors (28153424695244).

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

20020240440400 is a wasteful number, since it uses less digits than its factorization.

20020240440400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78082720 (or 78082709 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 22.

Adding to 20020240440400 its reverse (404404202002), we get a palindrome (20424644642402).

The spelling of 20020240440400 in words is "twenty trillion, twenty billion, two hundred forty million, four hundred forty thousand, four hundred".