128122405008 has 80 divisors (see below), whose sum is σ = 356525680896. Its totient is φ = 39413145600.

The previous prime is 128122404997. The next prime is 128122405039. The reversal of 128122405008 is 800504221821.

It is a self number, because there is not a number n which added to its sum of digits gives 128122405008.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2974441 + ... + 3017207.

Almost surely, 2^128122405008 is an apocalyptic number.

It is an amenable number.

128122405008 is an abundant number, since it is smaller than the sum of its proper divisors (228403275888).

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

128122405008 is a wasteful number, since it uses less digits than its factorization.

128122405008 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47592 (or 47586 counting only the distinct ones).

The product of its (nonzero) digits is 10240, while the sum is 33.

Adding to 128122405008 its reverse (800504221821), we get a palindrome (928626626829).

The spelling of 128122405008 in words is "one hundred twenty-eight billion, one hundred twenty-two million, four hundred five thousand, eight".