12664643316 has 24 divisors (see below), whose sum is σ = 31823975904. Its totient is φ = 3896813280.

The previous prime is 12664643297. The next prime is 12664643333. The reversal of 12664643316 is 61334646621.

It is a super-3 number, since 3×12664643316³ (a number of 31 digits) contains 333 as substring.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40591650 + ... + 40591961.

It is an arithmetic number, because the mean of its divisors is an integer number (1325998996).

Almost surely, 2^12664643316 is an apocalyptic number.

It is an amenable number.

12664643316 is an abundant number, since it is smaller than the sum of its proper divisors (19159332588).

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

12664643316 is a wasteful number, since it uses less digits than its factorization.

12664643316 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81183631 (or 81183629 counting only the distinct ones).

The product of its digits is 373248, while the sum is 42.

The spelling of 12664643316 in words is "twelve billion, six hundred sixty-four million, six hundred forty-three thousand, three hundred sixteen".