128779662099528 has 96 divisors (see below), whose sum is σ = 393605550374400. Its totient is φ = 37678480022400.

The previous prime is 128779662099443. The next prime is 128779662099541. The reversal of 128779662099528 is 825990266977821.

128779662099528 is a `hidden beast` number, since 1 + 2 + 8 + 7 + 7 + 9 + 66 + 20 + 9 + 9 + 528 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2803435368 + ... + 2803481303.

It is an arithmetic number, because the mean of its divisors is an integer number (4100057816400).

Almost surely, 2^{128779662099528} is an apocalyptic number.

128779662099528 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

128779662099528 is an abundant number, since it is smaller than the sum of its proper divisors (264825888274872).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

128779662099528 is a wasteful number, since it uses less digits than its factorization.

128779662099528 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5606916723 (or 5606916716 counting only the distinct ones).

The product of its (nonzero) digits is 3292047360, while the sum is 81.

The spelling of 128779662099528 in words is "one hundred twenty-eight trillion, seven hundred seventy-nine billion, six hundred sixty-two million, ninety-nine thousand, five hundred twenty-eight".