128869353108 has 144 divisors (see below), whose sum is σ = 357294013440. Its totient is φ = 40501490400.

The previous prime is 128869353103. The next prime is 128869353121. The reversal of 128869353108 is 801353968821.

128869353108 is a `hidden beast` number, since 1 + 28 + 86 + 9 + 3 + 531 + 0 + 8 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128869353103) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3880213 + ... + 3913283.

Almost surely, 2^128869353108 is an apocalyptic number.

128869353108 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 128869353108, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (178647006720).

128869353108 is an abundant number, since it is smaller than the sum of its proper divisors (228424660332).

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

128869353108 is a wasteful number, since it uses less digits than its factorization.

128869353108 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33320 (or 33306 counting only the distinct ones).

The product of its (nonzero) digits is 2488320, while the sum is 54.

The spelling of 128869353108 in words is "one hundred twenty-eight billion, eight hundred sixty-nine million, three hundred fifty-three thousand, one hundred eight".