505533235169 has 2 divisors, whose sum is σ = 505533235170. Its totient is φ = 505533235168.

The previous prime is 505533235073. The next prime is 505533235199. The reversal of 505533235169 is 961532335505.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 405495136225 + 100038098944 = 636785^2 + 316288^2 .

It is a cyclic number.

It is not a de Polignac number, because 505533235169 - 2²⁸ = 505264799713 is a prime.

It is a super-2 number, since 2×505533235169² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (505533235199) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 252766617584 + 252766617585.

It is an arithmetic number, because the mean of its divisors is an integer number (252766617585).

Almost surely, 2^505533235169 is an apocalyptic number.

It is an amenable number.

505533235169 is a deficient number, since it is larger than the sum of its proper divisors (1).

505533235169 is an equidigital number, since it uses as much as digits as its factorization.

505533235169 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1822500, while the sum is 47.

The spelling of 505533235169 in words is "five hundred five billion, five hundred thirty-three million, two hundred thirty-five thousand, one hundred sixty-nine".