20433013423 has 2 divisors, whose sum is σ = 20433013424. Its totient is φ = 20433013422.

The previous prime is 20433013417. The next prime is 20433013487. The reversal of 20433013423 is 32431033402.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20433013423 - 2⁹ = 20433012911 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20433023423) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10216506711 + 10216506712.

It is an arithmetic number, because the mean of its divisors is an integer number (10216506712).

Almost surely, 2^20433013423 is an apocalyptic number.

20433013423 is a deficient number, since it is larger than the sum of its proper divisors (1).

20433013423 is an equidigital number, since it uses as much as digits as its factorization.

20433013423 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5184, while the sum is 25.

Adding to 20433013423 its reverse (32431033402), we get a palindrome (52864046825).

The spelling of 20433013423 in words is "twenty billion, four hundred thirty-three million, thirteen thousand, four hundred twenty-three".