128630889227 has 2 divisors, whose sum is σ = 128630889228. Its totient is φ = 128630889226.

The previous prime is 128630889197. The next prime is 128630889229. The reversal of 128630889227 is 722988036821.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 128630889227 - 2¹⁶ = 128630823691 is a prime.

Together with 128630889229, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (128630889229) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64315444613 + 64315444614.

It is an arithmetic number, because the mean of its divisors is an integer number (64315444614).

Almost surely, 2^128630889227 is an apocalyptic number.

128630889227 is a deficient number, since it is larger than the sum of its proper divisors (1).

128630889227 is an equidigital number, since it uses as much as digits as its factorization.

128630889227 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4644864, while the sum is 56.

The spelling of 128630889227 in words is "one hundred twenty-eight billion, six hundred thirty million, eight hundred eighty-nine thousand, two hundred twenty-seven".