12665065742327 has 16 divisors (see below), whose sum is σ = 13150225670400. Its totient is φ = 12184705113600.

The previous prime is 12665065742323. The next prime is 12665065742411. The reversal of 12665065742327 is 72324756056621.

It is a cyclic number.

It is not a de Polignac number, because 12665065742327 - 2² = 12665065742323 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12665065742321) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 73113077 + ... + 73286097.

It is an arithmetic number, because the mean of its divisors is an integer number (821889104400).

Almost surely, 2^{12665065742327} is an apocalyptic number.

12665065742327 is a deficient number, since it is larger than the sum of its proper divisors (485159928073).

12665065742327 is a wasteful number, since it uses less digits than its factorization.

12665065742327 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 186874.

The product of its (nonzero) digits is 25401600, while the sum is 56.

The spelling of 12665065742327 in words is "twelve trillion, six hundred sixty-five billion, sixty-five million, seven hundred forty-two thousand, three hundred twenty-seven".