20047375058717 has 2 divisors, whose sum is σ = 20047375058718. Its totient is φ = 20047375058716.

The previous prime is 20047375058611. The next prime is 20047375058723. The reversal of 20047375058717 is 71785057374002.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14220297702361 + 5827077356356 = 3770981^2 + 2413934^2 .

It is a cyclic number.

It is not a de Polignac number, because 20047375058717 - 2²⁸ = 20047106623261 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20047375058017) by changing a digit.

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 as a sum of consecutive naturals, namely, 10023687529358 + 10023687529359.

It is an arithmetic number, because the mean of its divisors is an integer number (10023687529359).

Almost surely, 2^{20047375058717} is an apocalyptic number.

It is an amenable number.

20047375058717 is a deficient number, since it is larger than the sum of its proper divisors (1).

20047375058717 is an equidigital number, since it uses as much as digits as its factorization.

20047375058717 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11524800, while the sum is 56.

The spelling of 20047375058717 in words is "twenty trillion, forty-seven billion, three hundred seventy-five million, fifty-eight thousand, seven hundred seventeen".