128771040000 has 360 divisors, whose sum is σ = 435615808320. Its totient is φ = 33749504000.

The previous prime is 128771039963. The next prime is 128771040029. The reversal of 128771040000 is 40177821.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a self number, because there is not a number n which added to its sum of digits gives 128771040000.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 28317727 + ... + 28322273.

It is an arithmetic number, because the mean of its divisors is an integer number (1210043912).

Almost surely, 2^128771040000 is an apocalyptic number.

128771040000 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 128771040000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (217807904160).

128771040000 is an abundant number, since it is smaller than the sum of its proper divisors (306844768320).

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

128771040000 is an frugal number, since it uses more digits than its factorization.

128771040000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4645 (or 4616 counting only the distinct ones).

The product of its (nonzero) digits is 3136, while the sum is 30.

The spelling of 128771040000 in words is "one hundred twenty-eight billion, seven hundred seventy-one million, forty thousand".