500115561161 has 2 divisors, whose sum is σ = 500115561162. Its totient is φ = 500115561160.

The previous prime is 500115561151. The next prime is 500115561199. The reversal of 500115561161 is 161165511005.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 425829333136 + 74286228025 = 652556^2 + 272555^2 .

It is a cyclic number.

It is not a de Polignac number, because 500115561161 - 2³⁰ = 499041819337 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (500115561151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 250057780580 + 250057780581.

It is an arithmetic number, because the mean of its divisors is an integer number (250057780581).

Almost surely, 2^500115561161 is an apocalyptic number.

It is an amenable number.

500115561161 is a deficient number, since it is larger than the sum of its proper divisors (1).

500115561161 is an equidigital number, since it uses as much as digits as its factorization.

500115561161 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4500, while the sum is 32.

The spelling of 500115561161 in words is "five hundred billion, one hundred fifteen million, five hundred sixty-one thousand, one hundred sixty-one".