12666651513875 has 32 divisors (see below), whose sum is σ = 16738449384384. Its totient is φ = 9536908992000.

The previous prime is 12666651513871. The next prime is 12666651513881. The reversal of 12666651513875 is 57831515666621.

It is not a de Polignac number, because 12666651513875 - 2² = 12666651513871 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12666651513871) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 72292124 + ... + 72467126.

It is an arithmetic number, because the mean of its divisors is an integer number (523076543262).

Almost surely, 2^{12666651513875} is an apocalyptic number.

12666651513875 is a deficient number, since it is larger than the sum of its proper divisors (4071797870509).

12666651513875 is a wasteful number, since it uses less digits than its factorization.

12666651513875 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 209096 (or 209086 counting only the distinct ones).

The product of its digits is 54432000, while the sum is 62.

The spelling of 12666651513875 in words is "twelve trillion, six hundred sixty-six billion, six hundred fifty-one million, five hundred thirteen thousand, eight hundred seventy-five".