20443430743 has 2 divisors, whose sum is σ = 20443430744. Its totient is φ = 20443430742.

The previous prime is 20443430737. The next prime is 20443430747. The reversal of 20443430743 is 34703434402.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20443430743 - 2¹⁷ = 20443299671 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20443430699 and 20443430708.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20443430747) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10221715371 + 10221715372.

It is an arithmetic number, because the mean of its divisors is an integer number (10221715372).

Almost surely, 2^20443430743 is an apocalyptic number.

20443430743 is a deficient number, since it is larger than the sum of its proper divisors (1).

20443430743 is an equidigital number, since it uses as much as digits as its factorization.

20443430743 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 96768, while the sum is 34.

The spelling of 20443430743 in words is "twenty billion, four hundred forty-three million, four hundred thirty thousand, seven hundred forty-three".