12665735968 has 48 divisors (see below), whose sum is σ = 26287801344. Its totient is φ = 5998164480.

The previous prime is 12665735959. The next prime is 12665735989. The reversal of 12665735968 is 86953756621.

It is a super-2 number, since 2×12665735968² (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 (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 89205 + ... + 182452.

It is an arithmetic number, because the mean of its divisors is an integer number (547662528).

Almost surely, 2^12665735968 is an apocalyptic number.

It is an amenable number.

12665735968 is an abundant number, since it is smaller than the sum of its proper divisors (13622065376).

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

12665735968 is a wasteful number, since it uses less digits than its factorization.

12665735968 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 271745 (or 271737 counting only the distinct ones).

The product of its digits is 16329600, while the sum is 58.

The spelling of 12665735968 in words is "twelve billion, six hundred sixty-five million, seven hundred thirty-five thousand, nine hundred sixty-eight".