128910657704 has 16 divisors (see below), whose sum is σ = 241718046900. Its totient is φ = 64452511872.

The previous prime is 128910657691. The next prime is 128910657719. The reversal of 128910657704 is 407756019821.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 125153212900 + 3757444804 = 353770^2 + 61298^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 150869 + ... + 529700.

Almost surely, 2^128910657704 is an apocalyptic number.

It is an amenable number.

128910657704 is a deficient number, since it is larger than the sum of its proper divisors (112807389196).

128910657704 is a wasteful number, since it uses less digits than its factorization.

128910657704 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 704252 (or 704248 counting only the distinct ones).

The product of its (nonzero) digits is 846720, while the sum is 50.

The spelling of 128910657704 in words is "one hundred twenty-eight billion, nine hundred ten million, six hundred fifty-seven thousand, seven hundred four".