12642311165 has 16 divisors (see below), whose sum is σ = 16659547776. Its totient is φ = 9133512000.

The previous prime is 12642311161. The next prime is 12642311167. The reversal of 12642311165 is 56111324621.

It is not a de Polignac number, because 12642311165 - 2² = 12642311161 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 (12642311161) 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, 752822 + ... + 769431.

It is an arithmetic number, because the mean of its divisors is an integer number (1041221736).

Almost surely, 2^12642311165 is an apocalyptic number.

It is an amenable number.

12642311165 is a deficient number, since it is larger than the sum of its proper divisors (4017236611).

12642311165 is a wasteful number, since it uses less digits than its factorization.

12642311165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1522420.

The product of its digits is 8640, while the sum is 32.

Adding to 12642311165 its reverse (56111324621), we get a palindrome (68753635786).

The spelling of 12642311165 in words is "twelve billion, six hundred forty-two million, three hundred eleven thousand, one hundred sixty-five".