2168680755 has 16 divisors (see below), whose sum is σ = 3589541280. Its totient is φ = 1116745728.

The previous prime is 2168680753. The next prime is 2168680777. The reversal of 2168680755 is 5570868612.

It is not a de Polignac number, because 2168680755 - 2¹ = 2168680753 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2168680751) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2492302 + ... + 2493171.

It is an arithmetic number, because the mean of its divisors is an integer number (224346330).

Almost surely, 2^2168680755 is an apocalyptic number.

2168680755 is a deficient number, since it is larger than the sum of its proper divisors (1420860525).

2168680755 is a wasteful number, since it uses less digits than its factorization.

2168680755 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4985510.

The product of its (nonzero) digits is 806400, while the sum is 48.

The square root of 2168680755 is about 46569.0965662852. The cubic root of 2168680755 is about 1294.3901771406.

The spelling of 2168680755 in words is "two billion, one hundred sixty-eight million, six hundred eighty thousand, seven hundred fifty-five".