128700845002 has 16 divisors (see below), whose sum is σ = 195720683400. Its totient is φ = 63460841472.

The previous prime is 128700844931. The next prime is 128700845047. The reversal of 128700845002 is 200548007821.

It is a Cunningham number, because it is equal to 358749²+1.

It can be written as a sum of positive squares in 4 ways, for example, as 125754635161 + 2946209841 = 354619^2 + 54279^2 .

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, 1191124 + ... + 1294672.

Almost surely, 2^128700845002 is an apocalyptic number.

128700845002 is a deficient number, since it is larger than the sum of its proper divisors (67019838398).

128700845002 is a wasteful number, since it uses less digits than its factorization.

128700845002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112137.

The product of its (nonzero) digits is 35840, while the sum is 37.

The spelling of 128700845002 in words is "one hundred twenty-eight billion, seven hundred million, eight hundred forty-five thousand, two".