2165522071156 has 12 divisors (see below), whose sum is σ = 3805519959360. Its totient is φ = 1078230654200.

The previous prime is 2165522071109. The next prime is 2165522071171. The reversal of 2165522071156 is 6511702255612.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1132594270 + ... + 1132596181.

It is an arithmetic number, because the mean of its divisors is an integer number (317126663280).

Almost surely, 2^{2165522071156} is an apocalyptic number.

It is an amenable number.

2165522071156 is a deficient number, since it is larger than the sum of its proper divisors (1639997888204).

2165522071156 is a wasteful number, since it uses less digits than its factorization.

2165522071156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2265190694 (or 2265190692 counting only the distinct ones).

The product of its (nonzero) digits is 252000, while the sum is 43.

The spelling of 2165522071156 in words is "two trillion, one hundred sixty-five billion, five hundred twenty-two million, seventy-one thousand, one hundred fifty-six".