28555345163 has 2 divisors, whose sum is σ = 28555345164. Its totient is φ = 28555345162.

The previous prime is 28555345129. The next prime is 28555345201. The reversal of 28555345163 is 36154355582.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28555345163 - 2¹⁸ = 28555083019 is a prime.

It is not a weakly prime, because it can be changed into another prime (28555315163) 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, 14277672581 + 14277672582.

It is an arithmetic number, because the mean of its divisors is an integer number (14277672582).

Almost surely, 2^28555345163 is an apocalyptic number.

28555345163 is a deficient number, since it is larger than the sum of its proper divisors (1).

28555345163 is an equidigital number, since it uses as much as digits as its factorization.

28555345163 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2160000, while the sum is 47.

The spelling of 28555345163 in words is "twenty-eight billion, five hundred fifty-five million, three hundred forty-five thousand, one hundred sixty-three".