20424044404020 has 24 divisors (see below), whose sum is σ = 57187324331424. Its totient is φ = 5446411841056.

The previous prime is 20424044404013. The next prime is 20424044404039. The reversal of 20424044404020 is 2040444042402.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 170200369974 + ... + 170200370093.

It is an arithmetic number, because the mean of its divisors is an integer number (2382805180476).

Almost surely, 2^{20424044404020} is an apocalyptic number.

20424044404020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20424044404020 is an abundant number, since it is smaller than the sum of its proper divisors (36763279927404).

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

20424044404020 is a wasteful number, since it uses less digits than its factorization.

20424044404020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 340400740079 (or 340400740077 counting only the distinct ones).

The product of its (nonzero) digits is 32768, while the sum is 30.

Adding to 20424044404020 its reverse (2040444042402), we get a palindrome (22464488446422).

The spelling of 20424044404020 in words is "twenty trillion, four hundred twenty-four billion, forty-four million, four hundred four thousand, twenty".