20444420020 has 48 divisors (see below), whose sum is σ = 45261232128. Its totient is φ = 7745575680.

The previous prime is 20444419993. The next prime is 20444420027. The reversal of 20444420020 is 2002444402.

It is a junction number, because it is equal to n+sod(n) for n = 20444419973 and 20444420000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20444420027) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 321657 + ... + 379936.

It is an arithmetic number, because the mean of its divisors is an integer number (942942336).

Almost surely, 2^20444420020 is an apocalyptic number.

20444420020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20444420020 is an abundant number, since it is smaller than the sum of its proper divisors (24816812108).

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

20444420020 is a wasteful number, since it uses less digits than its factorization.

20444420020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 701680 (or 701678 counting only the distinct ones).

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

Adding to 20444420020 its reverse (2002444402), we get a palindrome (22446864422).

The spelling of 20444420020 in words is "twenty billion, four hundred forty-four million, four hundred twenty thousand, twenty".