20433134423 has 16 divisors (see below), whose sum is σ = 22332695616. Its totient is φ = 18581011200.

The previous prime is 20433134419. The next prime is 20433134483. The reversal of 20433134423 is 32443133402.

It is not a de Polignac number, because 20433134423 - 2² = 20433134419 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20433134483) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 819998 + ... + 844548.

It is an arithmetic number, because the mean of its divisors is an integer number (1395793476).

Almost surely, 2^20433134423 is an apocalyptic number.

20433134423 is a deficient number, since it is larger than the sum of its proper divisors (1899561193).

20433134423 is a wasteful number, since it uses less digits than its factorization.

20433134423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25514.

The product of its (nonzero) digits is 20736, while the sum is 29.

Adding to 20433134423 its reverse (32443133402), we get a palindrome (52876267825).

The spelling of 20433134423 in words is "twenty billion, four hundred thirty-three million, one hundred thirty-four thousand, four hundred twenty-three".