128964804417 has 6 divisors (see below), whose sum is σ = 186282495282. Its totient is φ = 85976536272.

The previous prime is 128964804413. The next prime is 128964804433. The reversal of 128964804417 is 714408469821.

128964804417 is a `hidden beast` number, since 1 + 28 + 96 + 480 + 44 + 17 = 666.

It can be written as a sum of positive squares in only one way, i.e., 128537307441 + 427496976 = 358521^2 + 20676^2 .

It is not a de Polignac number, because 128964804417 - 2² = 128964804413 is a prime.

It is not an unprimeable number, because it can be changed into a prime (128964804413) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 7164711348 + ... + 7164711365.

It is an arithmetic number, because the mean of its divisors is an integer number (31047082547).

Almost surely, 2^128964804417 is an apocalyptic number.

It is an amenable number.

128964804417 is a deficient number, since it is larger than the sum of its proper divisors (57317690865).

128964804417 is a wasteful number, since it uses less digits than its factorization.

128964804417 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14329422719 (or 14329422716 counting only the distinct ones).

The product of its (nonzero) digits is 3096576, while the sum is 54.

The spelling of 128964804417 in words is "one hundred twenty-eight billion, nine hundred sixty-four million, eight hundred four thousand, four hundred seventeen".