128683518569 has 8 divisors (see below), whose sum is σ = 129263934240. Its totient is φ = 128103222016.

The previous prime is 128683518511. The next prime is 128683518589. The reversal of 128683518569 is 965815386821.

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-128683518569 is a prime.

It is a super-2 number, since 2×128683518569² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (128683518589) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2693282 + ... + 2740644.

It is an arithmetic number, because the mean of its divisors is an integer number (16157991780).

Almost surely, 2^128683518569 is an apocalyptic number.

It is an amenable number.

128683518569 is a deficient number, since it is larger than the sum of its proper divisors (580415671).

128683518569 is a wasteful number, since it uses less digits than its factorization.

128683518569 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59559.

The product of its digits is 24883200, while the sum is 62.

The spelling of 128683518569 in words is "one hundred twenty-eight billion, six hundred eighty-three million, five hundred eighteen thousand, five hundred sixty-nine".