20434323343305 has 32 divisors (see below), whose sum is σ = 32817772931328. Its totient is φ = 10857428870400.

The previous prime is 20434323343241. The next prime is 20434323343307. The reversal of 20434323343305 is 50334332343402.

It is not a de Polignac number, because 20434323343305 - 2⁶ = 20434323343241 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20434323343307) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2021787 + ... + 6704943.

It is an arithmetic number, because the mean of its divisors is an integer number (1025555404104).

Almost surely, 2^{20434323343305} is an apocalyptic number.

It is an amenable number.

20434323343305 is a deficient number, since it is larger than the sum of its proper divisors (12383449588023).

20434323343305 is a wasteful number, since it uses less digits than its factorization.

20434323343305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4684257.

The product of its (nonzero) digits is 933120, while the sum is 39.

Adding to 20434323343305 its reverse (50334332343402), we get a palindrome (70768655686707).

The spelling of 20434323343305 in words is "twenty trillion, four hundred thirty-four billion, three hundred twenty-three million, three hundred forty-three thousand, three hundred five".