128950861330 has 32 divisors (see below), whose sum is σ = 234464315904. Its totient is φ = 51057932736.

The previous prime is 128950861313. The next prime is 128950861337. The reversal of 128950861330 is 33168059821.

It is not an unprimeable number, because it can be changed into a prime (128950861337) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2526039 + ... + 2576581.

It is an arithmetic number, because the mean of its divisors is an integer number (7327009872).

Almost surely, 2^128950861330 is an apocalyptic number.

128950861330 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

128950861330 is a deficient number, since it is larger than the sum of its proper divisors (105513454574).

128950861330 is a wasteful number, since it uses less digits than its factorization.

128950861330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53130.

The product of its (nonzero) digits is 311040, while the sum is 46.

The spelling of 128950861330 in words is "one hundred twenty-eight billion, nine hundred fifty million, eight hundred sixty-one thousand, three hundred thirty".