128223793168 has 20 divisors (see below), whose sum is σ = 248439219408. Its totient is φ = 64110446240.

The previous prime is 128223793133. The next prime is 128223793169. The reversal of 128223793168 is 861397322821.

It is a happy number.

It is a super-2 number, since 2×128223793168² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (128223793169) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1170003 + ... + 1274893.

Almost surely, 2^128223793168 is an apocalyptic number.

It is an amenable number.

128223793168 is a deficient number, since it is larger than the sum of its proper divisors (120215426240).

128223793168 is a wasteful number, since it uses less digits than its factorization.

128223793168 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 181302 (or 181296 counting only the distinct ones).

The product of its digits is 1741824, while the sum is 52.

The spelling of 128223793168 in words is "one hundred twenty-eight billion, two hundred twenty-three million, seven hundred ninety-three thousand, one hundred sixty-eight".