23665042165 has 8 divisors (see below), whose sum is σ = 29892684960. Its totient is φ = 17935610832.

The previous prime is 23665042139. The next prime is 23665042169. The reversal of 23665042165 is 56124056632.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 23665042165 - 2²⁷ = 23530824437 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23665042169) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 124552759 + ... + 124552948.

It is an arithmetic number, because the mean of its divisors is an integer number (3736585620).

Almost surely, 2^23665042165 is an apocalyptic number.

It is an amenable number.

23665042165 is a deficient number, since it is larger than the sum of its proper divisors (6227642795).

23665042165 is a wasteful number, since it uses less digits than its factorization.

23665042165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 249105731.

The product of its (nonzero) digits is 259200, while the sum is 40.

Adding to 23665042165 its reverse (56124056632), we get a palindrome (79789098797).

The spelling of 23665042165 in words is "twenty-three billion, six hundred sixty-five million, forty-two thousand, one hundred sixty-five".