28806664852643 has 2 divisors, whose sum is σ = 28806664852644. Its totient is φ = 28806664852642.

The previous prime is 28806664852633. The next prime is 28806664852711. The reversal of 28806664852643 is 34625846660882.

It is an a-pointer prime, because the next prime (28806664852711) can be obtained adding 28806664852643 to its sum of digits (68).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28806664852643 - 2⁸ = 28806664852387 is a prime.

It is not a weakly prime, because it can be changed into another prime (28806664852613) 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 as a sum of consecutive naturals, namely, 14403332426321 + 14403332426322.

It is an arithmetic number, because the mean of its divisors is an integer number (14403332426322).

Almost surely, 2^{28806664852643} is an apocalyptic number.

28806664852643 is a deficient number, since it is larger than the sum of its proper divisors (1).

28806664852643 is an equidigital number, since it uses as much as digits as its factorization.

28806664852643 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 637009920, while the sum is 68.

The spelling of 28806664852643 in words is "twenty-eight trillion, eight hundred six billion, six hundred sixty-four million, eight hundred fifty-two thousand, six hundred forty-three".