23164849565 has 16 divisors (see below), whose sum is σ = 32657579136. Its totient is φ = 15551227200.

The previous prime is 23164849537. The next prime is 23164849567. The reversal of 23164849565 is 56594846132.

It is a happy number.

It is not a de Polignac number, because 23164849565 - 2⁶ = 23164849501 is a prime.

It is a super-2 number, since 2×23164849565² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23164849567) 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, 16198481 + ... + 16199910.

It is an arithmetic number, because the mean of its divisors is an integer number (2041098696).

Almost surely, 2^23164849565 is an apocalyptic number.

It is an amenable number.

23164849565 is a deficient number, since it is larger than the sum of its proper divisors (9492729571).

23164849565 is a wasteful number, since it uses less digits than its factorization.

23164849565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32398420.

The product of its digits is 6220800, while the sum is 53.

The spelling of 23164849565 in words is "twenty-three billion, one hundred sixty-four million, eight hundred forty-nine thousand, five hundred sixty-five".