20104235542305 has 12 divisors (see below), whose sum is σ = 34847341606740. Its totient is φ = 10722258955872.

The previous prime is 20104235542277. The next prime is 20104235542319. The reversal of 20104235542305 is 50324553240102.

20104235542305 is a `hidden beast` number, since 2 + 0 + 10 + 42 + 35 + 542 + 30 + 5 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 6863137218081 + 13241098324224 = 2619759^2 + 3638832^2 .

It is not a de Polignac number, because 20104235542305 - 2¹⁹ = 20104235018017 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20104235542305.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 223380394870 + ... + 223380394959.

It is an arithmetic number, because the mean of its divisors is an integer number (2903945133895).

Almost surely, 2^{20104235542305} is an apocalyptic number.

It is an amenable number.

20104235542305 is a deficient number, since it is larger than the sum of its proper divisors (14743106064435).

20104235542305 is a wasteful number, since it uses less digits than its factorization.

20104235542305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 446760789840 (or 446760789837 counting only the distinct ones).

The product of its (nonzero) digits is 144000, while the sum is 36.

Adding to 20104235542305 its reverse (50324553240102), we get a palindrome (70428788782407).

The spelling of 20104235542305 in words is "twenty trillion, one hundred four billion, two hundred thirty-five million, five hundred forty-two thousand, three hundred five".