20104201644445 has 8 divisors (see below), whose sum is σ = 24194168170200. Its totient is φ = 16037277184320.

The previous prime is 20104201644419. The next prime is 20104201644451. The reversal of 20104201644445 is 54444610240102.

It can be written as a sum of positive squares in 4 ways, for example, as 10510395416676 + 9593806227769 = 3241974^2 + 3097387^2 .

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

It is not a de Polignac number, because 20104201644445 - 2¹⁵ = 20104201611677 is a prime.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 5760514486 + ... + 5760517975.

It is an arithmetic number, because the mean of its divisors is an integer number (3024271021275).

Almost surely, 2^{20104201644445} is an apocalyptic number.

It is an amenable number.

20104201644445 is a deficient number, since it is larger than the sum of its proper divisors (4089966525755).

20104201644445 is a wasteful number, since it uses less digits than its factorization.

20104201644445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11521032815.

The product of its (nonzero) digits is 122880, while the sum is 37.

Adding to 20104201644445 its reverse (54444610240102), we get a palindrome (74548811884547).

The spelling of 20104201644445 in words is "twenty trillion, one hundred four billion, two hundred one million, six hundred forty-four thousand, four hundred forty-five".