128309668084 has 24 divisors (see below), whose sum is σ = 241824135168. Its totient is φ = 59217456480.

The previous prime is 128309668073. The next prime is 128309668103. The reversal of 128309668084 is 480866903821.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 2379429 + ... + 2432755.

It is an arithmetic number, because the mean of its divisors is an integer number (10076005632).

Almost surely, 2^128309668084 is an apocalyptic number.

It is an amenable number.

128309668084 is a deficient number, since it is larger than the sum of its proper divisors (113514467084).

128309668084 is a wasteful number, since it uses less digits than its factorization.

128309668084 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99615 (or 99613 counting only the distinct ones).

The product of its (nonzero) digits is 3981312, while the sum is 55.

The spelling of 128309668084 in words is "one hundred twenty-eight billion, three hundred nine million, six hundred sixty-eight thousand, eighty-four".