12672288224665 has 4 divisors (see below), whose sum is σ = 15206745869604. Its totient is φ = 10137830579728.

The previous prime is 12672288224587. The next prime is 12672288224669. The reversal of 12672288224665 is 56642288227621.

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 3786499567449 + 8885788657216 = 1945893^2 + 2980904^2 .

It is a cyclic number.

It is not a de Polignac number, because 12672288224665 - 2⁹ = 12672288224153 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12672288224669) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1267228822462 + ... + 1267228822471.

It is an arithmetic number, because the mean of its divisors is an integer number (3801686467401).

Almost surely, 2^{12672288224665} is an apocalyptic number.

It is an amenable number.

12672288224665 is a deficient number, since it is larger than the sum of its proper divisors (2534457644939).

12672288224665 is an equidigital number, since it uses as much as digits as its factorization.

12672288224665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2534457644938.

The product of its digits is 61931520, while the sum is 61.

The spelling of 12672288224665 in words is "twelve trillion, six hundred seventy-two billion, two hundred eighty-eight million, two hundred twenty-four thousand, six hundred sixty-five".