20941808263 has 2 divisors, whose sum is σ = 20941808264. Its totient is φ = 20941808262.

The previous prime is 20941808203. The next prime is 20941808273. The reversal of 20941808263 is 36280814902.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20941808263 - 2⁹ = 20941807751 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20941808203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10470904131 + 10470904132.

It is an arithmetic number, because the mean of its divisors is an integer number (10470904132).

Almost surely, 2^20941808263 is an apocalyptic number.

20941808263 is a deficient number, since it is larger than the sum of its proper divisors (1).

20941808263 is an equidigital number, since it uses as much as digits as its factorization.

20941808263 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 165888, while the sum is 43.

The spelling of 20941808263 in words is "twenty billion, nine hundred forty-one million, eight hundred eight thousand, two hundred sixty-three".