12426206644165 has 8 divisors (see below), whose sum is σ = 15164184379680. Its totient is φ = 9772474377552.

The previous prime is 12426206644151. The next prime is 12426206644169. The reversal of 12426206644165 is 56144660262421.

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

It is a cyclic number.

It is not a de Polignac number, because 12426206644165 - 2¹¹ = 12426206642117 is a prime.

It is a super-4 number, since 4×12426206644165⁴ (a number of 53 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12426206644169) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21061366899 + ... + 21061367488.

It is an arithmetic number, because the mean of its divisors is an integer number (1895523047460).

Almost surely, 2^{12426206644165} is an apocalyptic number.

It is an amenable number.

12426206644165 is a deficient number, since it is larger than the sum of its proper divisors (2737977735515).

12426206644165 is an equidigital number, since it uses as much as digits as its factorization.

12426206644165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42122734451.

The product of its (nonzero) digits is 3317760, while the sum is 49.

The spelling of 12426206644165 in words is "twelve trillion, four hundred twenty-six billion, two hundred six million, six hundred forty-four thousand, one hundred sixty-five".