20204244424040 has 48 divisors (see below), whose sum is σ = 48290940636300. Its totient is φ = 7606303778816.

The previous prime is 20204244424019. The next prime is 20204244424093. The reversal of 20204244424040 is 4042444240202.

It can be written as a sum of positive squares in 6 ways, for example, as 12904921044964 + 7299323379076 = 3592342^2 + 2701726^2 .

It is a super-2 number, since 2×20204244424040² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20204244423988 and 20204244424006.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 873874445 + ... + 873897564.

Almost surely, 2^{20204244424040} is an apocalyptic number.

20204244424040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20204244424040 is an abundant number, since it is smaller than the sum of its proper divisors (28086696212260).

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

20204244424040 is a wasteful number, since it uses less digits than its factorization.

20204244424040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1747772054 (or 1747772033 counting only the distinct ones).

The product of its (nonzero) digits is 65536, while the sum is 32.

Adding to 20204244424040 its reverse (4042444240202), we get a palindrome (24246688664242).

The spelling of 20204244424040 in words is "twenty trillion, two hundred four billion, two hundred forty-four million, four hundred twenty-four thousand, forty".