515506130161 has 24 divisors (see below), whose sum is σ = 592307775360. Its totient is φ = 447477011520.

The previous prime is 515506130159. The next prime is 515506130219. The reversal of 515506130161 is 161031605515.

It is not a de Polignac number, because 515506130161 - 2¹ = 515506130159 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (515506130861) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1420756 + ... + 1746298.

It is an arithmetic number, because the mean of its divisors is an integer number (24679490640).

Almost surely, 2^515506130161 is an apocalyptic number.

It is an amenable number.

515506130161 is a deficient number, since it is larger than the sum of its proper divisors (76801645199).

515506130161 is a wasteful number, since it uses less digits than its factorization.

515506130161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 326157 (or 326146 counting only the distinct ones).

The product of its (nonzero) digits is 13500, while the sum is 34.

Adding to 515506130161 its reverse (161031605515), we get a palindrome (676537735676).

The spelling of 515506130161 in words is "five hundred fifteen billion, five hundred six million, one hundred thirty thousand, one hundred sixty-one".