20243102443 has 2 divisors, whose sum is σ = 20243102444. Its totient is φ = 20243102442.

The previous prime is 20243102371. The next prime is 20243102459. The reversal of 20243102443 is 34420134202.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20243102443 - 2²⁵ = 20209548011 is a prime.

It is not a weakly prime, because it can be changed into another prime (20243102843) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10121551221 + 10121551222.

It is an arithmetic number, because the mean of its divisors is an integer number (10121551222).

Almost surely, 2^20243102443 is an apocalyptic number.

20243102443 is a deficient number, since it is larger than the sum of its proper divisors (1).

20243102443 is an equidigital number, since it uses as much as digits as its factorization.

20243102443 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4608, while the sum is 25.

Adding to 20243102443 its reverse (34420134202), we get a palindrome (54663236645).

The spelling of 20243102443 in words is "twenty billion, two hundred forty-three million, one hundred two thousand, four hundred forty-three".