128318660156 has 24 divisors (see below), whose sum is σ = 225248100000. Its totient is φ = 63962138304.

The previous prime is 128318660149. The next prime is 128318660203. The reversal of 128318660156 is 651066813821.

It is a self number, because there is not a number n which added to its sum of digits gives 128318660156.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12892670 + ... + 12902618.

It is an arithmetic number, because the mean of its divisors is an integer number (9385337500).

Almost surely, 2^128318660156 is an apocalyptic number.

It is an amenable number.

128318660156 is a deficient number, since it is larger than the sum of its proper divisors (96929439844).

128318660156 is a wasteful number, since it uses less digits than its factorization.

128318660156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19541 (or 19539 counting only the distinct ones).

The product of its (nonzero) digits is 414720, while the sum is 47.

The spelling of 128318660156 in words is "one hundred twenty-eight billion, three hundred eighteen million, six hundred sixty thousand, one hundred fifty-six".