20443423421332 has 12 divisors (see below), whose sum is σ = 35776026428436. Its totient is φ = 10221701584640.

The previous prime is 20443423421299. The next prime is 20443423421371. The reversal of 20443423421332 is 23312432434402.

It can be written as a sum of positive squares in 2 ways, for example, as 13879394956036 + 6564028465296 = 3725506^2 + 2562036^2 .

It is a super-2 number, since 2×20443423421332² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20443423421291 and 20443423421300.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3734082 + ... + 7404742.

It is an arithmetic number, because the mean of its divisors is an integer number (2981335535703).

Almost surely, 2^{20443423421332} is an apocalyptic number.

It is an amenable number.

20443423421332 is a deficient number, since it is larger than the sum of its proper divisors (15332603007104).

20443423421332 is a wasteful number, since it uses less digits than its factorization.

20443423421332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5063018 (or 5063016 counting only the distinct ones).

The product of its (nonzero) digits is 331776, while the sum is 37.

Adding to 20443423421332 its reverse (23312432434402), we get a palindrome (43755855855734).

The spelling of 20443423421332 in words is "twenty trillion, four hundred forty-three billion, four hundred twenty-three million, four hundred twenty-one thousand, three hundred thirty-two".