20312650650571 has 2 divisors, whose sum is σ = 20312650650572. Its totient is φ = 20312650650570.

The previous prime is 20312650650563. The next prime is 20312650650587. The reversal of 20312650650571 is 17505605621302.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20312650650571 - 2³ = 20312650650563 is a prime.

It is not a weakly prime, because it can be changed into another prime (20312650650671) 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, 10156325325285 + 10156325325286.

It is an arithmetic number, because the mean of its divisors is an integer number (10156325325286).

Almost surely, 2^{20312650650571} is an apocalyptic number.

20312650650571 is a deficient number, since it is larger than the sum of its proper divisors (1).

20312650650571 is an equidigital number, since it uses as much as digits as its factorization.

20312650650571 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 378000, while the sum is 43.

The spelling of 20312650650571 in words is "twenty trillion, three hundred twelve billion, six hundred fifty million, six hundred fifty thousand, five hundred seventy-one".