12646933369 has 12 divisors (see below), whose sum is σ = 15577136244. Its totient is φ = 10202567424.

The previous prime is 12646933339. The next prime is 12646933381. The reversal of 12646933369 is 96333964621.

It can be written as a sum of positive squares in 2 ways, for example, as 5929000000 + 6717933369 = 77000^2 + 81963^2 .

It is not a de Polignac number, because 12646933369 - 2¹¹ = 12646931321 is a prime.

It is a super-2 number, since 2×12646933369² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12646933309) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7590364 + ... + 7592029.

It is an arithmetic number, because the mean of its divisors is an integer number (1298094687).

Almost surely, 2^12646933369 is an apocalyptic number.

It is an amenable number.

12646933369 is a deficient number, since it is larger than the sum of its proper divisors (2930202875).

12646933369 is a wasteful number, since it uses less digits than its factorization.

12646933369 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15182424 (or 15182417 counting only the distinct ones).

The product of its digits is 3779136, while the sum is 52.

The spelling of 12646933369 in words is "twelve billion, six hundred forty-six million, nine hundred thirty-three thousand, three hundred sixty-nine".