12428246687 has 2 divisors, whose sum is σ = 12428246688. Its totient is φ = 12428246686.

The previous prime is 12428246681. The next prime is 12428246749. The reversal of 12428246687 is 78664282421.

It is a weak prime.

It is an emirp because it is prime and its reverse (78664282421) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12428246687 - 2⁴ = 12428246671 is a prime.

It is a super-2 number, since 2×12428246687² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12428246681) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6214123343 + 6214123344.

It is an arithmetic number, because the mean of its divisors is an integer number (6214123344).

Almost surely, 2^12428246687 is an apocalyptic number.

12428246687 is a deficient number, since it is larger than the sum of its proper divisors (1).

12428246687 is an equidigital number, since it uses as much as digits as its factorization.

12428246687 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2064384, while the sum is 50.

The spelling of 12428246687 in words is "twelve billion, four hundred twenty-eight million, two hundred forty-six thousand, six hundred eighty-seven".