23166445665 has 32 divisors (see below), whose sum is σ = 40605235200. Its totient is φ = 11185200320.

The previous prime is 23166445651. The next prime is 23166445667. The reversal of 23166445665 is 56654466132.

It is not a de Polignac number, because 23166445665 - 2⁵ = 23166445633 is a prime.

It is not an unprimeable number, because it can be changed into a prime (23166445667) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 254295 + ... + 333164.

It is an arithmetic number, because the mean of its divisors is an integer number (1268913600).

Almost surely, 2^23166445665 is an apocalyptic number.

It is an amenable number.

23166445665 is a deficient number, since it is larger than the sum of its proper divisors (17438789535).

23166445665 is a wasteful number, since it uses less digits than its factorization.

23166445665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 587717.

The product of its digits is 3110400, while the sum is 48.

The spelling of 23166445665 in words is "twenty-three billion, one hundred sixty-six million, four hundred forty-five thousand, six hundred sixty-five".