128941712290 has 32 divisors (see below), whose sum is σ = 244559502720. Its totient is φ = 48812344704.

The previous prime is 128941712279. The next prime is 128941712293. The reversal of 128941712290 is 92217149821.

It is a self number, because there is not a number n which added to its sum of digits gives 128941712290.

It is not an unprimeable number, because it can be changed into a prime (128941712293) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 158419 + ... + 531958.

It is an arithmetic number, because the mean of its divisors is an integer number (7642484460).

Almost surely, 2^128941712290 is an apocalyptic number.

128941712290 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

128941712290 is a deficient number, since it is larger than the sum of its proper divisors (115617790430).

128941712290 is a wasteful number, since it uses less digits than its factorization.

128941712290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 691386.

The product of its (nonzero) digits is 145152, while the sum is 46.

The spelling of 128941712290 in words is "one hundred twenty-eight billion, nine hundred forty-one million, seven hundred twelve thousand, two hundred ninety".