128617279863 has 8 divisors (see below), whose sum is σ = 176124563568. Its totient is φ = 83427424704.

The previous prime is 128617279859. The next prime is 128617279873. The reversal of 128617279863 is 368972716821.

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

It is not a de Polignac number, because 128617279863 - 2² = 128617279859 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 128617279797 and 128617279806.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128617279873) 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, 579357006 + ... + 579357227.

It is an arithmetic number, because the mean of its divisors is an integer number (22015570446).

Almost surely, 2^128617279863 is an apocalyptic number.

128617279863 is a deficient number, since it is larger than the sum of its proper divisors (47507283705).

128617279863 is a wasteful number, since it uses less digits than its factorization.

128617279863 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1158714273.

The product of its digits is 12192768, while the sum is 60.

The spelling of 128617279863 in words is "one hundred twenty-eight billion, six hundred seventeen million, two hundred seventy-nine thousand, eight hundred sixty-three".