20444020040420 has 48 divisors (see below), whose sum is σ = 44804712411648. Its totient is φ = 7821074659200.

The previous prime is 20444020040419. The next prime is 20444020040447. The reversal of 20444020040420 is 2404002044402.

It is a self number, because there is not a number n which added to its sum of digits gives 20444020040420.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 862622 + ... + 6452298.

It is an arithmetic number, because the mean of its divisors is an integer number (933431508576).

Almost surely, 2^{20444020040420} is an apocalyptic number.

20444020040420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20444020040420 is an abundant number, since it is smaller than the sum of its proper divisors (24360692371228).

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

20444020040420 is a wasteful number, since it uses less digits than its factorization.

20444020040420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5597660 (or 5597658 counting only the distinct ones).

The product of its (nonzero) digits is 8192, while the sum is 26.

Adding to 20444020040420 its reverse (2404002044402), we get a palindrome (22848022084822).

The spelling of 20444020040420 in words is "twenty trillion, four hundred forty-four billion, twenty million, forty thousand, four hundred twenty".