513332160181 has 2 divisors, whose sum is σ = 513332160182. Its totient is φ = 513332160180.

The previous prime is 513332160169. The next prime is 513332160239. The reversal of 513332160181 is 181061233315.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 411478629156 + 101853531025 = 641466^2 + 319145^2 .

It is a cyclic number.

It is not a de Polignac number, because 513332160181 - 2⁷ = 513332160053 is a prime.

It is a super-2 number, since 2×513332160181² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (513332163181) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 256666080090 + 256666080091.

It is an arithmetic number, because the mean of its divisors is an integer number (256666080091).

Almost surely, 2^513332160181 is an apocalyptic number.

It is an amenable number.

513332160181 is a deficient number, since it is larger than the sum of its proper divisors (1).

513332160181 is an equidigital number, since it uses as much as digits as its factorization.

513332160181 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12960, while the sum is 34.

Adding to 513332160181 its reverse (181061233315), we get a palindrome (694393393496).

The spelling of 513332160181 in words is "five hundred thirteen billion, three hundred thirty-two million, one hundred sixty thousand, one hundred eighty-one".