128976389890 has 16 divisors (see below), whose sum is σ = 232804186560. Its totient is φ = 51446848240.

The previous prime is 128976389869. The next prime is 128976389897. The reversal of 128976389890 is 98983679821.

It is not an unprimeable number, because it can be changed into a prime (128976389897) 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 7 ways as a sum of consecutive naturals, for example, 17959696 + ... + 17966875.

It is an arithmetic number, because the mean of its divisors is an integer number (14550261660).

Almost surely, 2^128976389890 is an apocalyptic number.

128976389890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

128976389890 is a deficient number, since it is larger than the sum of its proper divisors (103827796670).

128976389890 is a wasteful number, since it uses less digits than its factorization.

128976389890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35926937.

The product of its (nonzero) digits is 94058496, while the sum is 70.

The spelling of 128976389890 in words is "one hundred twenty-eight billion, nine hundred seventy-six million, three hundred eighty-nine thousand, eight hundred ninety".