12691086216 has 32 divisors (see below), whose sum is σ = 31780543200. Its totient is φ = 4223318400.

The previous prime is 12691086209. The next prime is 12691086241. The reversal of 12691086216 is 61268019621.

12691086216 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×12691086216² (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 7 ways as a sum of consecutive naturals, for example, 425506 + ... + 454353.

It is an arithmetic number, because the mean of its divisors is an integer number (993141975).

Almost surely, 2^12691086216 is an apocalyptic number.

It is an amenable number.

12691086216 is an abundant number, since it is smaller than the sum of its proper divisors (19089456984).

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

12691086216 is a wasteful number, since it uses less digits than its factorization.

12691086216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 880469 (or 880465 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 42.

The spelling of 12691086216 in words is "twelve billion, six hundred ninety-one million, eighty-six thousand, two hundred sixteen".