128563112188 has 24 divisors (see below), whose sum is σ = 258075044864. Its totient is φ = 54895158000.

The previous prime is 128563112123. The next prime is 128563112273. The reversal of 128563112188 is 881211365821.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8463888 + ... + 8479063.

Almost surely, 2^128563112188 is an apocalyptic number.

It is an amenable number.

128563112188 is an abundant number, since it is smaller than the sum of its proper divisors (129511932676).

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

128563112188 is a wasteful number, since it uses less digits than its factorization.

128563112188 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16943233 (or 16943231 counting only the distinct ones).

The product of its digits is 184320, while the sum is 46.

The spelling of 128563112188 in words is "one hundred twenty-eight billion, five hundred sixty-three million, one hundred twelve thousand, one hundred eighty-eight".