12651530216 has 64 divisors (see below), whose sum is σ = 25724880720. Its totient is φ = 5798522880.

The previous prime is 12651530207. The next prime is 12651530233. The reversal of 12651530216 is 61203515621.

12651530216 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 8 ways, for example, as 1221782116 + 11429748100 = 34954^2 + 106910^2 .

It is a super-2 number, since 2×12651530216² (a number of 21 digits) contains 22 as substring.

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 15 ways as a sum of consecutive naturals, for example, 16366406 + ... + 16367178.

Almost surely, 2^12651530216 is an apocalyptic number.

It is an amenable number.

12651530216 is an abundant number, since it is smaller than the sum of its proper divisors (13073350504).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12651530216 is a wasteful number, since it uses less digits than its factorization.

12651530216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1686 (or 1682 counting only the distinct ones).

The product of its (nonzero) digits is 10800, while the sum is 32.

The spelling of 12651530216 in words is "twelve billion, six hundred fifty-one million, five hundred thirty thousand, two hundred sixteen".