12657675621 has 16 divisors (see below), whose sum is σ = 17058545280. Its totient is φ = 8347771200.

The previous prime is 12657675593. The next prime is 12657675637.

12657675621 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 12657675621 - 2¹¹ = 12657673573 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12657675661) 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, 350320 + ... + 384758.

It is an arithmetic number, because the mean of its divisors is an integer number (1066159080).

Almost surely, 2^12657675621 is an apocalyptic number.

It is an amenable number.

12657675621 is a deficient number, since it is larger than the sum of its proper divisors (4400869659).

12657675621 is a wasteful number, since it uses less digits than its factorization.

12657675621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35756.

The product of its digits is 1058400, while the sum is 48.

The spelling of 12657675621 in words is "twelve billion, six hundred fifty-seven million, six hundred seventy-five thousand, six hundred twenty-one".