23664516573 has 16 divisors (see below), whose sum is σ = 32409933696. Its totient is φ = 15347839680.

The previous prime is 23664516569. The next prime is 23664516691. The reversal of 23664516573 is 37561546632.

It is not a de Polignac number, because 23664516573 - 2² = 23664516569 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23664516563) 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, 1432903 + ... + 1449323.

It is an arithmetic number, because the mean of its divisors is an integer number (2025620856).

Almost surely, 2^23664516573 is an apocalyptic number.

It is an amenable number.

23664516573 is a deficient number, since it is larger than the sum of its proper divisors (8745417123).

23664516573 is a wasteful number, since it uses less digits than its factorization.

23664516573 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29444.

The product of its digits is 2721600, while the sum is 48.

The spelling of 23664516573 in words is "twenty-three billion, six hundred sixty-four million, five hundred sixteen thousand, five hundred seventy-three".