128050785379 has 4 divisors (see below), whose sum is σ = 139691765880. Its totient is φ = 116409804880.

The previous prime is 128050785377. The next prime is 128050785389. The reversal of 128050785379 is 973587050821.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 128050785379 - 2¹ = 128050785377 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (128050785377) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5820490234 + ... + 5820490255.

It is an arithmetic number, because the mean of its divisors is an integer number (34922941470).

Almost surely, 2^128050785379 is an apocalyptic number.

128050785379 is a deficient number, since it is larger than the sum of its proper divisors (11640980501).

128050785379 is a wasteful number, since it uses less digits than its factorization.

128050785379 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11640980500.

The product of its (nonzero) digits is 4233600, while the sum is 55.

The spelling of 128050785379 in words is "one hundred twenty-eight billion, fifty million, seven hundred eighty-five thousand, three hundred seventy-nine".