128630889229 has 2 divisors, whose sum is σ = 128630889230. Its totient is φ = 128630889228.

The previous prime is 128630889227. The next prime is 128630889241. The reversal of 128630889229 is 922988036821.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 85850172004 + 42780717225 = 293002^2 + 206835^2 .

It is a cyclic number.

It is not a de Polignac number, because 128630889229 - 2¹ = 128630889227 is a prime.

Together with 128630889227, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (128630889227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64315444614 + 64315444615.

It is an arithmetic number, because the mean of its divisors is an integer number (64315444615).

Almost surely, 2^128630889229 is an apocalyptic number.

It is an amenable number.

128630889229 is a deficient number, since it is larger than the sum of its proper divisors (1).

128630889229 is an equidigital number, since it uses as much as digits as its factorization.

128630889229 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5971968, while the sum is 58.

The spelling of 128630889229 in words is "one hundred twenty-eight billion, six hundred thirty million, eight hundred eighty-nine thousand, two hundred twenty-nine".