12660123515512 has 16 divisors (see below), whose sum is σ = 25895707191000. Its totient is φ = 5754601597920.

The previous prime is 12660123515461. The next prime is 12660123515513. The reversal of 12660123515512 is 21551532106621.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12660123515513) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 71932519887 + ... + 71932520062.

Almost surely, 2^{12660123515512} is an apocalyptic number.

It is an amenable number.

12660123515512 is an abundant number, since it is smaller than the sum of its proper divisors (13235583675488).

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

12660123515512 is a wasteful number, since it uses less digits than its factorization.

12660123515512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 143865039966 (or 143865039962 counting only the distinct ones).

The product of its (nonzero) digits is 108000, while the sum is 40.

The spelling of 12660123515512 in words is "twelve trillion, six hundred sixty billion, one hundred twenty-three million, five hundred fifteen thousand, five hundred twelve".