128304217770 has 32 divisors (see below), whose sum is σ = 307951364160. Its totient is φ = 34212097920.

The previous prime is 128304217763. The next prime is 128304217829. The reversal of 128304217770 is 77712403821.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 318805 + ... + 598535.

It is an arithmetic number, because the mean of its divisors is an integer number (9623480130).

Almost surely, 2^128304217770 is an apocalyptic number.

128304217770 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

128304217770 is an abundant number, since it is smaller than the sum of its proper divisors (179647146390).

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

128304217770 is a wasteful number, since it uses less digits than its factorization.

128304217770 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 295030.

The product of its (nonzero) digits is 131712, while the sum is 42.

The spelling of 128304217770 in words is "one hundred twenty-eight billion, three hundred four million, two hundred seventeen thousand, seven hundred seventy".