128242616784 has 20 divisors (see below), whose sum is σ = 331293426816. Its totient is φ = 42747538912.

The previous prime is 128242616773. The next prime is 128242616837. The reversal of 128242616784 is 487616242821.

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, 1335860544 + ... + 1335860639.

Almost surely, 2^128242616784 is an apocalyptic number.

It is an amenable number.

128242616784 is an abundant number, since it is smaller than the sum of its proper divisors (203050810032).

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

128242616784 is a wasteful number, since it uses less digits than its factorization.

128242616784 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2671721194 (or 2671721188 counting only the distinct ones).

The product of its digits is 2064384, while the sum is 51.

The spelling of 128242616784 in words is "one hundred twenty-eight billion, two hundred forty-two million, six hundred sixteen thousand, seven hundred eighty-four".