12426412231165 has 4 divisors (see below), whose sum is σ = 14911694677404. Its totient is φ = 9941129784928.

The previous prime is 12426412231067. The next prime is 12426412231183. The reversal of 12426412231165 is 56113221462421.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 9149638876569 + 3276773354596 = 3024837^2 + 1810186^2 .

It is a cyclic number.

It is not a de Polignac number, because 12426412231165 - 2¹¹ = 12426412229117 is a prime.

It is a super-2 number, since 2×12426412231165² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1242641223112 + ... + 1242641223121.

It is an arithmetic number, because the mean of its divisors is an integer number (3727923669351).

Almost surely, 2^{12426412231165} is an apocalyptic number.

It is an amenable number.

12426412231165 is a deficient number, since it is larger than the sum of its proper divisors (2485282446239).

12426412231165 is an equidigital number, since it uses as much as digits as its factorization.

12426412231165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2485282446238.

The product of its digits is 138240, while the sum is 40.

Adding to 12426412231165 its reverse (56113221462421), we get a palindrome (68539633693586).

The spelling of 12426412231165 in words is "twelve trillion, four hundred twenty-six billion, four hundred twelve million, two hundred thirty-one thousand, one hundred sixty-five".