20434233305 has 8 divisors (see below), whose sum is σ = 24538272192. Its totient is φ = 16335925168.

The previous prime is 20434233293. The next prime is 20434233307. The reversal of 20434233305 is 50333243402.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20434233305 - 2²⁰ = 20433184729 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20434233307) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1424837 + ... + 1439106.

It is an arithmetic number, because the mean of its divisors is an integer number (3067284024).

Almost surely, 2^20434233305 is an apocalyptic number.

It is an amenable number.

20434233305 is a deficient number, since it is larger than the sum of its proper divisors (4104038887).

20434233305 is a wasteful number, since it uses less digits than its factorization.

20434233305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2865375.

The product of its (nonzero) digits is 25920, while the sum is 29.

Adding to 20434233305 its reverse (50333243402), we get a palindrome (70767476707).

The spelling of 20434233305 in words is "twenty billion, four hundred thirty-four million, two hundred thirty-three thousand, three hundred five".