128609034120 has 1024 divisors, whose sum is σ = 530841600000. Its totient is φ = 27067944960.

The previous prime is 128609034079. The next prime is 128609034167. The reversal of 128609034120 is 21430906821.

128609034120 is a `hidden beast` number, since 1 + 2 + 8 + 609 + 0 + 3 + 41 + 2 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 255 ways as a sum of consecutive naturals, for example, 863147806 + ... + 863147954.

It is an arithmetic number, because the mean of its divisors is an integer number (518400000).

Almost surely, 2^128609034120 is an apocalyptic number.

128609034120 is a gapful number since it is divisible by the number (10) 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 128609034120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (265420800000).

128609034120 is an abundant number, since it is smaller than the sum of its proper divisors (402232565880).

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

128609034120 is a wasteful number, since it uses less digits than its factorization.

128609034120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 363 (or 353 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 36.

The spelling of 128609034120 in words is "one hundred twenty-eight billion, six hundred nine million, thirty-four thousand, one hundred twenty".