20244042202420 has 12 divisors (see below), whose sum is σ = 42512488625124. Its totient is φ = 8097616880960.

The previous prime is 20244042202403. The next prime is 20244042202421. The reversal of 20244042202420 is 2420224044202.

It can be written as a sum of positive squares in 2 ways, for example, as 8179451280676 + 12064590921744 = 2859974^2 + 3473412^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20244042202421) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 506101055041 + ... + 506101055080.

It is an arithmetic number, because the mean of its divisors is an integer number (3542707385427).

Almost surely, 2^{20244042202420} is an apocalyptic number.

20244042202420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20244042202420 is an abundant number, since it is smaller than the sum of its proper divisors (22268446422704).

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

20244042202420 is a wasteful number, since it uses less digits than its factorization.

20244042202420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1012202110130 (or 1012202110128 counting only the distinct ones).

The product of its (nonzero) digits is 16384, while the sum is 28.

Adding to 20244042202420 its reverse (2420224044202), we get a palindrome (22664266246622).

The spelling of 20244042202420 in words is "twenty trillion, two hundred forty-four billion, forty-two million, two hundred two thousand, four hundred twenty".