2165827169856 has 112 divisors (see below), whose sum is σ = 6760308592640. Its totient is φ = 598846210560.

The previous prime is 2165827169851. The next prime is 2165827169879. The reversal of 2165827169856 is 6589617285612.

It is a tau number, because it is divible by the number of its divisors (112).

It is not an unprimeable number, because it can be changed into a prime (2165827169851) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25949926 + ... + 26033253.

Almost surely, 2^{2165827169856} is an apocalyptic number.

It is an amenable number.

2165827169856 is an abundant number, since it is smaller than the sum of its proper divisors (4594481422784).

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

2165827169856 is a wasteful number, since it uses less digits than its factorization.

2165827169856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51983232 (or 51983222 counting only the distinct ones).

The product of its digits is 87091200, while the sum is 66.

The spelling of 2165827169856 in words is "two trillion, one hundred sixty-five billion, eight hundred twenty-seven million, one hundred sixty-nine thousand, eight hundred fifty-six".