20550666282079 has 2 divisors, whose sum is σ = 20550666282080. Its totient is φ = 20550666282078.

The previous prime is 20550666282067. The next prime is 20550666282121. The reversal of 20550666282079 is 97028266605502.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20550666282079 - 2⁹ = 20550666281567 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20550666282779) 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, 10275333141039 + 10275333141040.

It is an arithmetic number, because the mean of its divisors is an integer number (10275333141040).

Almost surely, 2^{20550666282079} is an apocalyptic number.

20550666282079 is a deficient number, since it is larger than the sum of its proper divisors (1).

20550666282079 is an equidigital number, since it uses as much as digits as its factorization.

20550666282079 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 21772800, while the sum is 58.

The spelling of 20550666282079 in words is "twenty trillion, five hundred fifty billion, six hundred sixty-six million, two hundred eighty-two thousand, seventy-nine".