128017750445 has 8 divisors (see below), whose sum is σ = 165438323736. Its totient is φ = 94536184896.

The previous prime is 128017750429. The next prime is 128017750447. The reversal of 128017750445 is 544057710821.

It can be written as a sum of positive squares in 4 ways, for example, as 501625609 + 127516124836 = 22397^2 + 357094^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 128017750445 - 2⁴ = 128017750429 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 128017750396 and 128017750405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128017750447) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 984751862 + ... + 984751991.

It is an arithmetic number, because the mean of its divisors is an integer number (20679790467).

Almost surely, 2^128017750445 is an apocalyptic number.

It is an amenable number.

128017750445 is a deficient number, since it is larger than the sum of its proper divisors (37420573291).

128017750445 is a wasteful number, since it uses less digits than its factorization.

128017750445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1969503871.

The product of its (nonzero) digits is 313600, while the sum is 44.

The spelling of 128017750445 in words is "one hundred twenty-eight billion, seventeen million, seven hundred fifty thousand, four hundred forty-five".