12696666396 has 24 divisors (see below), whose sum is σ = 29930975760. Its totient is φ = 4188590592.

The previous prime is 12696666371. The next prime is 12696666421. The reversal of 12696666396 is 69366669621.

It is a happy number.

12696666396 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (12696666371) and next prime (12696666421).

It is a super-2 number, since 2×12696666396² (a number of 21 digits) contains 22 as substring.

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 7 ways as a sum of consecutive naturals, for example, 5452731 + ... + 5455058.

It is an arithmetic number, because the mean of its divisors is an integer number (1247123990).

Almost surely, 2^12696666396 is an apocalyptic number.

It is an amenable number.

12696666396 is an abundant number, since it is smaller than the sum of its proper divisors (17234309364).

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

12696666396 is a wasteful number, since it uses less digits than its factorization.

12696666396 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10907893 (or 10907891 counting only the distinct ones).

The product of its digits is 22674816, while the sum is 60.

The spelling of 12696666396 in words is "twelve billion, six hundred ninety-six million, six hundred sixty-six thousand, three hundred ninety-six".