128544339835 has 16 divisors (see below), whose sum is σ = 163764840096. Its totient is φ = 96526821888.

The previous prime is 128544339827. The next prime is 128544339881. The reversal of 128544339835 is 538933445821.

It is a cyclic number.

It is not a de Polignac number, because 128544339835 - 2³ = 128544339827 is a prime.

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, 1995489 + ... + 2058898.

It is an arithmetic number, because the mean of its divisors is an integer number (10235302506).

Almost surely, 2^128544339835 is an apocalyptic number.

128544339835 is a deficient number, since it is larger than the sum of its proper divisors (35220500261).

128544339835 is a wasteful number, since it uses less digits than its factorization.

128544339835 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4054782.

The product of its digits is 12441600, while the sum is 55.

The spelling of 128544339835 in words is "one hundred twenty-eight billion, five hundred forty-four million, three hundred thirty-nine thousand, eight hundred thirty-five".