523163134505161 has 2 divisors, whose sum is σ = 523163134505162. Its totient is φ = 523163134505160.

The previous prime is 523163134505117. The next prime is 523163134505173. The reversal of 523163134505161 is 161505431361325.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 311345848550025 + 211817285955136 = 17644995^2 + 14553944^2 .

It is a cyclic number.

It is not a de Polignac number, because 523163134505161 - 2¹⁵ = 523163134472393 is a prime.

It is not a weakly prime, because it can be changed into another prime (523163134505191) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 261581567252580 + 261581567252581.

It is an arithmetic number, because the mean of its divisors is an integer number (261581567252581).

Almost surely, 2^{523163134505161} is an apocalyptic number.

It is an amenable number.

523163134505161 is a deficient number, since it is larger than the sum of its proper divisors (1).

523163134505161 is an equidigital number, since it uses as much as digits as its factorization.

523163134505161 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 46.

Adding to 523163134505161 its reverse (161505431361325), we get a palindrome (684668565866486).

The spelling of 523163134505161 in words is "five hundred twenty-three trillion, one hundred sixty-three billion, one hundred thirty-four million, five hundred five thousand, one hundred sixty-one".