128669943194 has 8 divisors (see below), whose sum is σ = 207851446740. Its totient is φ = 59386127616.

The previous prime is 128669943161. The next prime is 128669943209. The reversal of 128669943194 is 491349966821.

It can be written as a sum of positive squares in 2 ways, for example, as 128656363969 + 13579225 = 358687^2 + 3685^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2474421959 + ... + 2474422010.

Almost surely, 2^128669943194 is an apocalyptic number.

128669943194 is a deficient number, since it is larger than the sum of its proper divisors (79181503546).

128669943194 is a wasteful number, since it uses less digits than its factorization.

128669943194 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4948843984.

The product of its digits is 20155392, while the sum is 62.

The spelling of 128669943194 in words is "one hundred twenty-eight billion, six hundred sixty-nine million, nine hundred forty-three thousand, one hundred ninety-four".