12666122132642 has 8 divisors (see below), whose sum is σ = 20726381671632. Its totient is φ = 5757328242100.

The previous prime is 12666122132593. The next prime is 12666122132701. The reversal of 12666122132642 is 24623122166621.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 12666122132593 and 12666122132602.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 287866412084 + ... + 287866412127.

It is an arithmetic number, because the mean of its divisors is an integer number (2590797708954).

Almost surely, 2^{12666122132642} is an apocalyptic number.

12666122132642 is a deficient number, since it is larger than the sum of its proper divisors (8060259538990).

12666122132642 is a wasteful number, since it uses less digits than its factorization.

12666122132642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 575732824224.

The product of its digits is 497664, while the sum is 44.

The spelling of 12666122132642 in words is "twelve trillion, six hundred sixty-six billion, one hundred twenty-two million, one hundred thirty-two thousand, six hundred forty-two".