128208803970 has 128 divisors (see below), whose sum is σ = 351305902080. Its totient is φ = 29715517440.

The previous prime is 128208803941. The next prime is 128208803993. The reversal of 128208803970 is 79308802821.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 304026 + ... + 590634.

It is an arithmetic number, because the mean of its divisors is an integer number (2744577360).

Almost surely, 2^128208803970 is an apocalyptic number.

128208803970 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 128208803970, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (175652951040).

128208803970 is an abundant number, since it is smaller than the sum of its proper divisors (223097098110).

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

128208803970 is a wasteful number, since it uses less digits than its factorization.

128208803970 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 286700.

The product of its (nonzero) digits is 387072, while the sum is 48.

The spelling of 128208803970 in words is "one hundred twenty-eight billion, two hundred eight million, eight hundred three thousand, nine hundred seventy".