20441332543 has 4 divisors (see below), whose sum is σ = 20876254560. Its totient is φ = 20006410528.

The previous prime is 20441332519. The next prime is 20441332577. The reversal of 20441332543 is 34523314402.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20441332543 - 2⁵ = 20441332511 is a prime.

It is a super-2 number, since 2×20441332543² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20441332943) 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, 217460938 + ... + 217461031.

It is an arithmetic number, because the mean of its divisors is an integer number (5219063640).

Almost surely, 2^20441332543 is an apocalyptic number.

20441332543 is a deficient number, since it is larger than the sum of its proper divisors (434922017).

20441332543 is an equidigital number, since it uses as much as digits as its factorization.

20441332543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 434922016.

The product of its (nonzero) digits is 34560, while the sum is 31.

Adding to 20441332543 its reverse (34523314402), we get a palindrome (54964646945).

The spelling of 20441332543 in words is "twenty billion, four hundred forty-one million, three hundred thirty-two thousand, five hundred forty-three".