12666099576 has 64 divisors (see below), whose sum is σ = 34116001920. Its totient is φ = 3895551360.

The previous prime is 12666099541. The next prime is 12666099643. The reversal of 12666099576 is 67599066621.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 829531 + ... + 844661.

It is an arithmetic number, because the mean of its divisors is an integer number (533062530).

Almost surely, 2^12666099576 is an apocalyptic number.

It is an amenable number.

12666099576 is an abundant number, since it is smaller than the sum of its proper divisors (21449902344).

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

12666099576 is a wasteful number, since it uses less digits than its factorization.

12666099576 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17836 (or 17832 counting only the distinct ones).

The product of its (nonzero) digits is 7348320, while the sum is 57.

The spelling of 12666099576 in words is "twelve billion, six hundred sixty-six million, ninety-nine thousand, five hundred seventy-six".