20345233304501 has 12 divisors (see below), whose sum is σ = 23691277846080. Its totient is φ = 17420811763320.

The previous prime is 20345233304479. The next prime is 20345233304507. The reversal of 20345233304501 is 10540333254302.

It is a de Polignac number, because none of the positive numbers 2^k-20345233304501 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 (20345233304507) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 213757181 + ... + 213852338.

It is an arithmetic number, because the mean of its divisors is an integer number (1974273153840).

Almost surely, 2^{20345233304501} is an apocalyptic number.

It is an amenable number.

20345233304501 is a deficient number, since it is larger than the sum of its proper divisors (3346044541579).

20345233304501 is an equidigital number, since it uses as much as digits as its factorization.

20345233304501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 427610504 (or 427610497 counting only the distinct ones).

The product of its (nonzero) digits is 129600, while the sum is 35.

Adding to 20345233304501 its reverse (10540333254302), we get a palindrome (30885566558803).

The spelling of 20345233304501 in words is "twenty trillion, three hundred forty-five billion, two hundred thirty-three million, three hundred four thousand, five hundred one".