128381580250 has 96 divisors (see below), whose sum is σ = 304983506880. Its totient is φ = 40014996000.

The previous prime is 128381580221. The next prime is 128381580259. The reversal of 128381580250 is 52085183821.

It is a junction number, because it is equal to n+sod(n) for n = 128381580197 and 128381580206.

It is not an unprimeable number, because it can be changed into a prime (128381580259) 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, 341620 + ... + 611119.

It is an arithmetic number, because the mean of its divisors is an integer number (3176911530).

Almost surely, 2^128381580250 is an apocalyptic number.

128381580250 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

128381580250 is an abundant number, since it is smaller than the sum of its proper divisors (176601926630).

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

128381580250 is a wasteful number, since it uses less digits than its factorization.

128381580250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 952781 (or 952764 counting only the distinct ones).

The product of its (nonzero) digits is 153600, while the sum is 43.

The spelling of 128381580250 in words is "one hundred twenty-eight billion, three hundred eighty-one million, five hundred eighty thousand, two hundred fifty".