12646680045 has 16 divisors (see below), whose sum is σ = 20248313280. Its totient is φ = 6740354304.

The previous prime is 12646680043. The next prime is 12646680049. The reversal of 12646680045 is 54008664621.

It is not a de Polignac number, because 12646680045 - 2¹ = 12646680043 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12646679979 and 12646680006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12646680043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 260779 + ... + 305448.

It is an arithmetic number, because the mean of its divisors is an integer number (1265519580).

Almost surely, 2^12646680045 is an apocalyptic number.

12646680045 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12646680045 is a deficient number, since it is larger than the sum of its proper divisors (7601633235).

12646680045 is a wasteful number, since it uses less digits than its factorization.

12646680045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 567724.

The product of its (nonzero) digits is 276480, while the sum is 42.

The spelling of 12646680045 in words is "twelve billion, six hundred forty-six million, six hundred eighty thousand, forty-five".