28863488887 has 2 divisors, whose sum is σ = 28863488888. Its totient is φ = 28863488886.

The previous prime is 28863488881. The next prime is 28863488971. The reversal of 28863488887 is 78888436882.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28863488887 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28863488881) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14431744443 + 14431744444.

It is an arithmetic number, because the mean of its divisors is an integer number (14431744444).

Almost surely, 2^28863488887 is an apocalyptic number.

28863488887 is a deficient number, since it is larger than the sum of its proper divisors (1).

28863488887 is an equidigital number, since it uses as much as digits as its factorization.

28863488887 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 264241152, while the sum is 70.

The spelling of 28863488887 in words is "twenty-eight billion, eight hundred sixty-three million, four hundred eighty-eight thousand, eight hundred eighty-seven".