20305279944959 has 2 divisors, whose sum is σ = 20305279944960. Its totient is φ = 20305279944958.

The previous prime is 20305279944941. The next prime is 20305279944967. The reversal of 20305279944959 is 95944997250302.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20305279944959 - 2¹² = 20305279940863 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20305279944979) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10152639972479 + 10152639972480.

It is an arithmetic number, because the mean of its divisors is an integer number (10152639972480).

Almost surely, 2^{20305279944959} is an apocalyptic number.

20305279944959 is a deficient number, since it is larger than the sum of its proper divisors (1).

20305279944959 is an equidigital number, since it uses as much as digits as its factorization.

20305279944959 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 220449600, while the sum is 68.

The spelling of 20305279944959 in words is "twenty trillion, three hundred five billion, two hundred seventy-nine million, nine hundred forty-four thousand, nine hundred fifty-nine".