20312650650563 has 2 divisors, whose sum is σ = 20312650650564. Its totient is φ = 20312650650562.

The previous prime is 20312650650527. The next prime is 20312650650571. The reversal of 20312650650563 is 36505605621302.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20312650650563 - 2⁸ = 20312650650307 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (20312650652563) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10156325325281 + 10156325325282.

It is an arithmetic number, because the mean of its divisors is an integer number (10156325325282).

Almost surely, 2^{20312650650563} is an apocalyptic number.

20312650650563 is a deficient number, since it is larger than the sum of its proper divisors (1).

20312650650563 is an equidigital number, since it uses as much as digits as its factorization.

20312650650563 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 972000, while the sum is 44.

The spelling of 20312650650563 in words is "twenty trillion, three hundred twelve billion, six hundred fifty million, six hundred fifty thousand, five hundred sixty-three".