128007808829 has 2 divisors, whose sum is σ = 128007808830. Its totient is φ = 128007808828.

The previous prime is 128007808811. The next prime is 128007808889. The reversal of 128007808829 is 928808700821.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 79090312900 + 48917495929 = 281230^2 + 221173^2 .

It is a cyclic number.

It is not a de Polignac number, because 128007808829 - 2⁸ = 128007808573 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (128007808889) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64003904414 + 64003904415.

It is an arithmetic number, because the mean of its divisors is an integer number (64003904415).

Almost surely, 2^128007808829 is an apocalyptic number.

It is an amenable number.

128007808829 is a deficient number, since it is larger than the sum of its proper divisors (1).

128007808829 is an equidigital number, since it uses as much as digits as its factorization.

128007808829 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1032192, while the sum is 53.

The spelling of 128007808829 in words is "one hundred twenty-eight billion, seven million, eight hundred eight thousand, eight hundred twenty-nine".