28639367563 has 2 divisors, whose sum is σ = 28639367564. Its totient is φ = 28639367562.

The previous prime is 28639367551. The next prime is 28639367579. The reversal of 28639367563 is 36576393682.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28639367563 - 2⁹ = 28639367051 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 28639367498 and 28639367507.

It is not a weakly prime, because it can be changed into another prime (28639367063) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14319683781 + 14319683782.

It is an arithmetic number, because the mean of its divisors is an integer number (14319683782).

Almost surely, 2^28639367563 is an apocalyptic number.

28639367563 is a deficient number, since it is larger than the sum of its proper divisors (1).

28639367563 is an equidigital number, since it uses as much as digits as its factorization.

28639367563 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 29393280, while the sum is 58.

The spelling of 28639367563 in words is "twenty-eight billion, six hundred thirty-nine million, three hundred sixty-seven thousand, five hundred sixty-three".