128447223368 has 8 divisors (see below), whose sum is σ = 240838543830. Its totient is φ = 64223611680.

The previous prime is 128447223341. The next prime is 128447223413. The reversal of 128447223368 is 863322744821.

It can be written as a sum of positive squares in only one way, i.e., 124610412004 + 3836811364 = 353002^2 + 61942^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8027951453 + ... + 8027951468.

Almost surely, 2^128447223368 is an apocalyptic number.

It is an amenable number.

128447223368 is a deficient number, since it is larger than the sum of its proper divisors (112391320462).

128447223368 is a wasteful number, since it uses less digits than its factorization.

128447223368 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16055902927 (or 16055902923 counting only the distinct ones).

The product of its digits is 3096576, while the sum is 50.

The spelling of 128447223368 in words is "one hundred twenty-eight billion, four hundred forty-seven million, two hundred twenty-three thousand, three hundred sixty-eight".