20104235542277 has 2 divisors, whose sum is σ = 20104235542278. Its totient is φ = 20104235542276.

The previous prime is 20104235542271. The next prime is 20104235542319. The reversal of 20104235542277 is 77224553240102.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19349142322756 + 755093219521 = 4398766^2 + 868961^2 .

It is a cyclic number.

It is not a de Polignac number, because 20104235542277 - 2¹⁰ = 20104235541253 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20104235542271) 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 as a sum of consecutive naturals, namely, 10052117771138 + 10052117771139.

It is an arithmetic number, because the mean of its divisors is an integer number (10052117771139).

Almost surely, 2^{20104235542277} is an apocalyptic number.

It is an amenable number.

20104235542277 is a deficient number, since it is larger than the sum of its proper divisors (1).

20104235542277 is an equidigital number, since it uses as much as digits as its factorization.

20104235542277 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 940800, while the sum is 44.

Adding to 20104235542277 its reverse (77224553240102), we get a palindrome (97328788782379).

The spelling of 20104235542277 in words is "twenty trillion, one hundred four billion, two hundred thirty-five million, five hundred forty-two thousand, two hundred seventy-seven".