128545549465 has 32 divisors (see below), whose sum is σ = 163364832000. Its totient is φ = 96830173440.

The previous prime is 128545549463. The next prime is 128545549471. The reversal of 128545549465 is 564945545821.

It is not a de Polignac number, because 128545549465 - 2¹ = 128545549463 is a prime.

It is a Smith number, since the sum of its digits (58) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (128545549463) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 20660055 + ... + 20666275.

It is an arithmetic number, because the mean of its divisors is an integer number (5105151000).

Almost surely, 2^128545549465 is an apocalyptic number.

It is an amenable number.

128545549465 is a deficient number, since it is larger than the sum of its proper divisors (34819282535).

128545549465 is a wasteful number, since it uses less digits than its factorization.

128545549465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7537.

The product of its digits is 34560000, while the sum is 58.

The spelling of 128545549465 in words is "one hundred twenty-eight billion, five hundred forty-five million, five hundred forty-nine thousand, four hundred sixty-five".