12647252165 has 16 divisors (see below), whose sum is σ = 15552686016. Its totient is φ = 9867331200.

The previous prime is 12647252143. The next prime is 12647252203. The reversal of 12647252165 is 56125274621.

12647252165 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12647252165 - 2⁸ = 12647251909 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (41).

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 622010 + ... + 642020.

It is an arithmetic number, because the mean of its divisors is an integer number (972042876).

Almost surely, 2^12647252165 is an apocalyptic number.

It is an amenable number.

12647252165 is a deficient number, since it is larger than the sum of its proper divisors (2905433851).

12647252165 is a wasteful number, since it uses less digits than its factorization.

12647252165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23140.

The product of its digits is 201600, while the sum is 41.

The spelling of 12647252165 in words is "twelve billion, six hundred forty-seven million, two hundred fifty-two thousand, one hundred sixty-five".