2165232568906 has 32 divisors (see below), whose sum is σ = 3592891064448. Its totient is φ = 970377315840.

The previous prime is 2165232568831. The next prime is 2165232568909. The reversal of 2165232568906 is 6098652325612.

It is a super-3 number, since 3×2165232568906³ (a number of 38 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (2165232568909) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4419891 + ... + 4885273.

It is an arithmetic number, because the mean of its divisors is an integer number (112277845764).

Almost surely, 2^{2165232568906} is an apocalyptic number.

2165232568906 is a deficient number, since it is larger than the sum of its proper divisors (1427658495542).

2165232568906 is a wasteful number, since it uses less digits than its factorization.

2165232568906 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 468366.

The product of its (nonzero) digits is 9331200, while the sum is 55.

The spelling of 2165232568906 in words is "two trillion, one hundred sixty-five billion, two hundred thirty-two million, five hundred sixty-eight thousand, nine hundred six".