128993665319 has 8 divisors (see below), whose sum is σ = 132147778560. Its totient is φ = 125839929600.

The previous prime is 128993665309. The next prime is 128993665343. The reversal of 128993665319 is 913566399821.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-128993665319 is a prime.

It is a super-2 number, since 2×128993665319² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128993665309) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 672602 + ... + 842840.

It is an arithmetic number, because the mean of its divisors is an integer number (16518472320).

Almost surely, 2^128993665319 is an apocalyptic number.

128993665319 is a deficient number, since it is larger than the sum of its proper divisors (3154113241).

128993665319 is a wasteful number, since it uses less digits than its factorization.

128993665319 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 188761.

The product of its digits is 18895680, while the sum is 62.

The spelling of 128993665319 in words is "one hundred twenty-eight billion, nine hundred ninety-three million, six hundred sixty-five thousand, three hundred nineteen".