20345020505233 has 16 divisors (see below), whose sum is σ = 21431815200000. Its totient is φ = 19259828339472.

The previous prime is 20345020505189. The next prime is 20345020505237. The reversal of 20345020505233 is 33250502054302.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 20345020505233 - 2²¹ = 20345018408081 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20345020505237) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 523432866 + ... + 523471732.

It is an arithmetic number, because the mean of its divisors is an integer number (1339488450000).

Almost surely, 2^{20345020505233} is an apocalyptic number.

It is an amenable number.

20345020505233 is a deficient number, since it is larger than the sum of its proper divisors (1086794694767).

20345020505233 is a wasteful number, since it uses less digits than its factorization.

20345020505233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58764.

The product of its (nonzero) digits is 108000, while the sum is 34.

Adding to 20345020505233 its reverse (33250502054302), we get a palindrome (53595522559535).

The spelling of 20345020505233 in words is "twenty trillion, three hundred forty-five billion, twenty million, five hundred five thousand, two hundred thirty-three".