128830956020136 has 96 divisors (see below), whose sum is σ = 354742745011200. Its totient is φ = 42227077806720.

The previous prime is 128830956020113. The next prime is 128830956020167. The reversal of 128830956020136 is 631020659038821.

128830956020136 is a `hidden beast` number, since 1 + 2 + 88 + 309 + 56 + 0 + 201 + 3 + 6 = 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, 10386385 + ... + 19119071.

It is an arithmetic number, because the mean of its divisors is an integer number (3695236927200).

Almost surely, 2^{128830956020136} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 128830956020136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (177371372505600).

128830956020136 is an abundant number, since it is smaller than the sum of its proper divisors (225911788991064).

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

128830956020136 is a wasteful number, since it uses less digits than its factorization.

128830956020136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8736119 (or 8736112 counting only the distinct ones).

The product of its (nonzero) digits is 3732480, while the sum is 54.

The spelling of 128830956020136 in words is "one hundred twenty-eight trillion, eight hundred thirty billion, nine hundred fifty-six million, twenty thousand, one hundred thirty-six".