12516629165 has 4 divisors (see below), whose sum is σ = 15019955004. Its totient is φ = 10013303328.

The previous prime is 12516629159. The next prime is 12516629179. The reversal of 12516629165 is 56192661521.

12516629165 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 56192661521 = 47 ⋅1195588543.

It can be written as a sum of positive squares in 2 ways, for example, as 1473561769 + 11043067396 = 38387^2 + 105086^2 .

It is a cyclic number.

It is not a de Polignac number, because 12516629165 - 2⁴ = 12516629149 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1251662912 + ... + 1251662921.

It is an arithmetic number, because the mean of its divisors is an integer number (3754988751).

Almost surely, 2^12516629165 is an apocalyptic number.

It is an amenable number.

12516629165 is a deficient number, since it is larger than the sum of its proper divisors (2503325839).

12516629165 is an equidigital number, since it uses as much as digits as its factorization.

12516629165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2503325838.

The product of its digits is 194400, while the sum is 44.

The spelling of 12516629165 in words is "twelve billion, five hundred sixteen million, six hundred twenty-nine thousand, one hundred sixty-five".