20244200040020 has 48 divisors (see below), whose sum is σ = 46377927691200. Its totient is φ = 7361478750720.

The previous prime is 20244200040019. The next prime is 20244200040049. The reversal of 20244200040020 is 2004000244202.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 20244200039974 and 20244200040001.

It is a congruent number.

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, 66115436 + ... + 66420924.

It is an arithmetic number, because the mean of its divisors is an integer number (966206826900).

Almost surely, 2^{20244200040020} is an apocalyptic number.

20244200040020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20244200040020 is an abundant number, since it is smaller than the sum of its proper divisors (26133727651180).

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

20244200040020 is a wasteful number, since it uses less digits than its factorization.

20244200040020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 606728 (or 606726 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 20.

Adding to 20244200040020 its reverse (2004000244202), we get a palindrome (22248200284222).

The spelling of 20244200040020 in words is "twenty trillion, two hundred forty-four billion, two hundred million, forty thousand, twenty".