323503540460161 has 2 divisors, whose sum is σ = 323503540460162. Its totient is φ = 323503540460160.

The previous prime is 323503540460153. The next prime is 323503540460179. The reversal of 323503540460161 is 161064045305323.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 322940882949136 + 562657511025 = 17970556^2 + 750105^2 .

It is a cyclic number.

It is not a de Polignac number, because 323503540460161 - 2³ = 323503540460153 is a prime.

It is not a weakly prime, because it can be changed into another prime (323503540460461) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 161751770230080 + 161751770230081.

It is an arithmetic number, because the mean of its divisors is an integer number (161751770230081).

Almost surely, 2^{323503540460161} is an apocalyptic number.

It is an amenable number.

323503540460161 is a deficient number, since it is larger than the sum of its proper divisors (1).

323503540460161 is an equidigital number, since it uses as much as digits as its factorization.

323503540460161 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 777600, while the sum is 43.

Adding to 323503540460161 its reverse (161064045305323), we get a palindrome (484567585765484).

The spelling of 323503540460161 in words is "three hundred twenty-three trillion, five hundred three billion, five hundred forty million, four hundred sixty thousand, one hundred sixty-one".