128920229195 has 16 divisors (see below), whose sum is σ = 158400134112. Its totient is φ = 100675249920.

The previous prime is 128920229177. The next prime is 128920229209. The reversal of 128920229195 is 591922029821.

It is a de Polignac number, because none of the positive numbers 2^k-128920229195 is a prime.

It is a Duffinian number.

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, 163559 + ... + 533471.

It is an arithmetic number, because the mean of its divisors is an integer number (9900008382).

Almost surely, 2^128920229195 is an apocalyptic number.

128920229195 is a deficient number, since it is larger than the sum of its proper divisors (29479904917).

128920229195 is a wasteful number, since it uses less digits than its factorization.

128920229195 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 371582.

The product of its (nonzero) digits is 466560, while the sum is 50.

The spelling of 128920229195 in words is "one hundred twenty-eight billion, nine hundred twenty million, two hundred twenty-nine thousand, one hundred ninety-five".