11667565412 has 12 divisors (see below), whose sum is σ = 20424504576. Its totient is φ = 5831992680.

The previous prime is 11667565411. The next prime is 11667565417. The reversal of 11667565412 is 21456576611.

It is a happy number.

It is a super-3 number, since 3×11667565412³ (a number of 31 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not an unprimeable number, because it can be changed into a prime (11667565411) 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 3 ways as a sum of consecutive naturals, for example, 432788 + ... + 458955.

It is an arithmetic number, because the mean of its divisors is an integer number (1702042048).

Almost surely, 2^11667565412 is an apocalyptic number.

It is an amenable number.

11667565412 is a deficient number, since it is larger than the sum of its proper divisors (8756939164).

11667565412 is a wasteful number, since it uses less digits than its factorization.

11667565412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 895018 (or 895016 counting only the distinct ones).

The product of its digits is 302400, while the sum is 44.

The spelling of 11667565412 in words is "eleven billion, six hundred sixty-seven million, five hundred sixty-five thousand, four hundred twelve".