128885563 has 2 divisors, whose sum is σ = 128885564. Its totient is φ = 128885562.

The previous prime is 128885513. The next prime is 128885573. The reversal of 128885563 is 365588821.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 128885563 - 2²¹ = 126788411 is a prime.

It is a super-2 number, since 2×128885563² = 33222976699653938, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (128885503) 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, 64442781 + 64442782.

It is an arithmetic number, because the mean of its divisors is an integer number (64442782).

Almost surely, 2^128885563 is an apocalyptic number.

128885563 is a deficient number, since it is larger than the sum of its proper divisors (1).

128885563 is an equidigital number, since it uses as much as digits as its factorization.

128885563 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 460800, while the sum is 46.

The square root of 128885563 is about 11352.7777658157. Note that the first 4 decimals coincide. The cubic root of 128885563 is about 505.1279785439.

The spelling of 128885563 in words is "one hundred twenty-eight million, eight hundred eighty-five thousand, five hundred sixty-three".