128123641173 has 16 divisors (see below), whose sum is σ = 192373327872. Its totient is φ = 75145830000.

The previous prime is 128123641153. The next prime is 128123641199. The reversal of 128123641173 is 371146321821.

It is not a de Polignac number, because 128123641173 - 2⁹ = 128123640661 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128123641133) 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, 62620503 + ... + 62622548.

It is an arithmetic number, because the mean of its divisors is an integer number (12023332992).

Almost surely, 2^128123641173 is an apocalyptic number.

It is an amenable number.

128123641173 is a deficient number, since it is larger than the sum of its proper divisors (64249686699).

128123641173 is a wasteful number, since it uses less digits than its factorization.

128123641173 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125243096.

The product of its digits is 48384, while the sum is 39.

Adding to 128123641173 its reverse (371146321821), we get a palindrome (499269962994).

The spelling of 128123641173 in words is "one hundred twenty-eight billion, one hundred twenty-three million, six hundred forty-one thousand, one hundred seventy-three".