128544870684 has 12 divisors (see below), whose sum is σ = 299938031624. Its totient is φ = 42848290224.

The previous prime is 128544870673. The next prime is 128544870719. The reversal of 128544870684 is 486078445821.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

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, 5356036267 + ... + 5356036290.

Almost surely, 2^128544870684 is an apocalyptic number.

It is an amenable number.

128544870684 is an abundant number, since it is smaller than the sum of its proper divisors (171393160940).

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

128544870684 is a wasteful number, since it uses less digits than its factorization.

128544870684 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10712072564 (or 10712072562 counting only the distinct ones).

The product of its (nonzero) digits is 13762560, while the sum is 57.

The spelling of 128544870684 in words is "one hundred twenty-eight billion, five hundred forty-four million, eight hundred seventy thousand, six hundred eighty-four".