20940712059173 has 2 divisors, whose sum is σ = 20940712059174. Its totient is φ = 20940712059172.

The previous prime is 20940712059161. The next prime is 20940712059233. The reversal of 20940712059173 is 37195021704902.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13414506906724 + 7526205152449 = 3662582^2 + 2743393^2 .

It is a cyclic number.

It is not a de Polignac number, because 20940712059173 - 2⁴² = 16542665548069 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20940712050173) 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, 10470356029586 + 10470356029587.

It is an arithmetic number, because the mean of its divisors is an integer number (10470356029587).

Almost surely, 2^{20940712059173} is an apocalyptic number.

It is an amenable number.

20940712059173 is a deficient number, since it is larger than the sum of its proper divisors (1).

20940712059173 is an equidigital number, since it uses as much as digits as its factorization.

20940712059173 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 952560, while the sum is 50.

The spelling of 20940712059173 in words is "twenty trillion, nine hundred forty billion, seven hundred twelve million, fifty-nine thousand, one hundred seventy-three".