12345666714791 has 16 divisors (see below), whose sum is σ = 12558553076160. Its totient is φ = 12133122554880.

The previous prime is 12345666714701. The next prime is 12345666714863. The reversal of 12345666714791 is 19741766654321.

It is a cyclic number.

It is not a de Polignac number, because 12345666714791 - 2⁴² = 7947620203687 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 (12345666714701) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 551898455 + ... + 551920823.

It is an arithmetic number, because the mean of its divisors is an integer number (784909567260).

Almost surely, 2^{12345666714791} is an apocalyptic number.

12345666714791 is a deficient number, since it is larger than the sum of its proper divisors (212886361369).

12345666714791 is a wasteful number, since it uses less digits than its factorization.

12345666714791 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29594.

The product of its digits is 45722880, while the sum is 62.

The spelling of 12345666714791 in words is "twelve trillion, three hundred forty-five billion, six hundred sixty-six million, seven hundred fourteen thousand, seven hundred ninety-one".