8128272480165 has 40 divisors (see below), whose sum is σ = 14570897667480. Its totient is φ = 4335014204928.

The previous prime is 8128272480127. The next prime is 8128272480169. The reversal of 8128272480165 is 5610842728218.

8128272480165 is a `hidden beast` number, since 8 + 1 + 2 + 82 + 72 + 480 + 16 + 5 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 3186503466084 + 4941769014081 = 1785078^2 + 2223009^2 .

It is not a de Polignac number, because 8128272480165 - 2⁹ = 8128272479653 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8128272480169) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 41377657 + ... + 41573633.

It is an arithmetic number, because the mean of its divisors is an integer number (364272441687).

Almost surely, 2^{8128272480165} is an apocalyptic number.

It is an amenable number.

8128272480165 is a deficient number, since it is larger than the sum of its proper divisors (6442625187315).

8128272480165 is a wasteful number, since it uses less digits than its factorization.

8128272480165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 298403 (or 298394 counting only the distinct ones).

The product of its (nonzero) digits is 3440640, while the sum is 54.

The spelling of 8128272480165 in words is "eight trillion, one hundred twenty-eight billion, two hundred seventy-two million, four hundred eighty thousand, one hundred sixty-five".