20443102442020 has 24 divisors (see below), whose sum is σ = 42948410400000. Its totient is φ = 8173832353632.

The previous prime is 20443102441991. The next prime is 20443102442023. The reversal of 20443102442020 is 2024420134402.

It is a self number, because there is not a number n which added to its sum of digits gives 20443102442020.

It is not an unprimeable number, because it can be changed into a prime (20443102442023) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 212989770 + ... + 213085729.

It is an arithmetic number, because the mean of its divisors is an integer number (1789517100000).

Almost surely, 2^{20443102442020} is an apocalyptic number.

20443102442020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20443102442020 is an abundant number, since it is smaller than the sum of its proper divisors (22505307957980).

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

20443102442020 is a wasteful number, since it uses less digits than its factorization.

20443102442020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 426077907 (or 426077905 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 28.

Adding to 20443102442020 its reverse (2024420134402), we get a palindrome (22467522576422).

The spelling of 20443102442020 in words is "twenty trillion, four hundred forty-three billion, one hundred two million, four hundred forty-two thousand, twenty".