20260445761729 has 2 divisors, whose sum is σ = 20260445761730. Its totient is φ = 20260445761728.

The previous prime is 20260445761709. The next prime is 20260445761739. The reversal of 20260445761729 is 92716754406202.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16402945503025 + 3857500258704 = 4050055^2 + 1964052^2 .

It is a cyclic number.

It is not a de Polignac number, because 20260445761729 - 2¹¹ = 20260445759681 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20260445761729.

It is not a weakly prime, because it can be changed into another prime (20260445761709) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10130222880864 + 10130222880865.

It is an arithmetic number, because the mean of its divisors is an integer number (10130222880865).

Almost surely, 2^{20260445761729} is an apocalyptic number.

It is an amenable number.

20260445761729 is a deficient number, since it is larger than the sum of its proper divisors (1).

20260445761729 is an equidigital number, since it uses as much as digits as its factorization.

20260445761729 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10160640, while the sum is 55.

The spelling of 20260445761729 in words is "twenty trillion, two hundred sixty billion, four hundred forty-five million, seven hundred sixty-one thousand, seven hundred twenty-nine".