500921166901 has 2 divisors, whose sum is σ = 500921166902. Its totient is φ = 500921166900.

The previous prime is 500921166883. The next prime is 500921166919. The reversal of 500921166901 is 109661129005.

It is a balanced prime because it is at equal distance from previous prime (500921166883) and next prime (500921166919).

It can be written as a sum of positive squares in only one way, i.e., 484791912900 + 16129254001 = 696270^2 + 127001^2 .

It is a cyclic number.

It is not a de Polignac number, because 500921166901 - 2⁵ = 500921166869 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (500921163901) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 250460583450 + 250460583451.

It is an arithmetic number, because the mean of its divisors is an integer number (250460583451).

Almost surely, 2^500921166901 is an apocalyptic number.

It is an amenable number.

500921166901 is a deficient number, since it is larger than the sum of its proper divisors (1).

500921166901 is an equidigital number, since it uses as much as digits as its factorization.

500921166901 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 29160, while the sum is 40.

The spelling of 500921166901 in words is "five hundred billion, nine hundred twenty-one million, one hundred sixty-six thousand, nine hundred one".