128225173164 has 24 divisors (see below), whose sum is σ = 326391350208. Its totient is φ = 38856113040.

The previous prime is 128225173163. The next prime is 128225173169. The reversal of 128225173164 is 461371522821.

It is not an unprimeable number, because it can be changed into a prime (128225173163) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 485701282 + ... + 485701545.

It is an arithmetic number, because the mean of its divisors is an integer number (13599639592).

Almost surely, 2^128225173164 is an apocalyptic number.

It is an amenable number.

128225173164 is an abundant number, since it is smaller than the sum of its proper divisors (198166177044).

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

128225173164 is a wasteful number, since it uses less digits than its factorization.

128225173164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 971402845 (or 971402843 counting only the distinct ones).

The product of its digits is 161280, while the sum is 42.

Adding to 128225173164 its reverse (461371522821), we get a palindrome (589596695985).

The spelling of 128225173164 in words is "one hundred twenty-eight billion, two hundred twenty-five million, one hundred seventy-three thousand, one hundred sixty-four".