20250455761729 has 2 divisors, whose sum is σ = 20250455761730. Its totient is φ = 20250455761728.

The previous prime is 20250455761709. The next prime is 20250455761747. The reversal of 20250455761729 is 92716755405202.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 17221296521025 + 3029159240704 = 4149855^2 + 1740448^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20250455761729 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20250455761729.

It is not a weakly prime, because it can be changed into another prime (20250455761709) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10125227880864 + 10125227880865.

It is an arithmetic number, because the mean of its divisors is an integer number (10125227880865).

Almost surely, 2^{20250455761729} is an apocalyptic number.

It is an amenable number.

20250455761729 is a deficient number, since it is larger than the sum of its proper divisors (1).

20250455761729 is an equidigital number, since it uses as much as digits as its factorization.

20250455761729 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10584000, while the sum is 55.

The spelling of 20250455761729 in words is "twenty trillion, two hundred fifty billion, four hundred fifty-five million, seven hundred sixty-one thousand, seven hundred twenty-nine".