128945016684 has 72 divisors (see below), whose sum is σ = 358375600128. Its totient is φ = 38766561120.

The previous prime is 128945016661. The next prime is 128945016691. The reversal of 128945016684 is 486610549821.

128945016684 is a `hidden beast` number, since 1 + 28 + 9 + 450 + 166 + 8 + 4 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 128945016684.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1231672 + ... + 1332255.

Almost surely, 2^128945016684 is an apocalyptic number.

It is an amenable number.

128945016684 is an abundant number, since it is smaller than the sum of its proper divisors (229430583444).

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

128945016684 is a wasteful number, since it uses less digits than its factorization.

128945016684 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2564075 (or 2564070 counting only the distinct ones).

The product of its (nonzero) digits is 3317760, while the sum is 54.

The spelling of 128945016684 in words is "one hundred twenty-eight billion, nine hundred forty-five million, sixteen thousand, six hundred eighty-four".