128794959169 has 4 divisors (see below), whose sum is σ = 128840264496. Its totient is φ = 128749653844.

The previous prime is 128794959133. The next prime is 128794959211. The reversal of 128794959169 is 961959497821.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 128794959169 - 2⁹ = 128794958657 is a prime.

It is a super-2 number, since 2×128794959169² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 128794959098 and 128794959107.

It is not an unprimeable number, because it can be changed into a prime (128794959119) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22648399 + ... + 22654084.

It is an arithmetic number, because the mean of its divisors is an integer number (32210066124).

Almost surely, 2^128794959169 is an apocalyptic number.

It is an amenable number.

128794959169 is a deficient number, since it is larger than the sum of its proper divisors (45305327).

128794959169 is an equidigital number, since it uses as much as digits as its factorization.

128794959169 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45305326.

The product of its digits is 88179840, while the sum is 70.

The spelling of 128794959169 in words is "one hundred twenty-eight billion, seven hundred ninety-four million, nine hundred fifty-nine thousand, one hundred sixty-nine".