20043100543 has 2 divisors, whose sum is σ = 20043100544. Its totient is φ = 20043100542.

The previous prime is 20043100463. The next prime is 20043100621. The reversal of 20043100543 is 34500134002.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20043100543 - 2⁹ = 20043100031 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20043190543) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10021550271 + 10021550272.

It is an arithmetic number, because the mean of its divisors is an integer number (10021550272).

Almost surely, 2^20043100543 is an apocalyptic number.

20043100543 is a deficient number, since it is larger than the sum of its proper divisors (1).

20043100543 is an equidigital number, since it uses as much as digits as its factorization.

20043100543 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1440, while the sum is 22.

Adding to 20043100543 its reverse (34500134002), we get a palindrome (54543234545).

The spelling of 20043100543 in words is "twenty billion, forty-three million, one hundred thousand, five hundred forty-three".