28088686663 has 2 divisors, whose sum is σ = 28088686664. Its totient is φ = 28088686662.

The previous prime is 28088686627. The next prime is 28088686667. The reversal of 28088686663 is 36668688082.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28088686663 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28088686667) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14044343331 + 14044343332.

It is an arithmetic number, because the mean of its divisors is an integer number (14044343332).

Almost surely, 2^28088686663 is an apocalyptic number.

28088686663 is a deficient number, since it is larger than the sum of its proper divisors (1).

28088686663 is an equidigital number, since it uses as much as digits as its factorization.

28088686663 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 31850496, while the sum is 61.

The spelling of 28088686663 in words is "twenty-eight billion, eighty-eight million, six hundred eighty-six thousand, six hundred sixty-three".