23640033243 has 16 divisors (see below), whose sum is σ = 31712318496. Its totient is φ = 15663943680.

The previous prime is 23640033199. The next prime is 23640033271. The reversal of 23640033243 is 34233004632.

It is not a de Polignac number, because 23640033243 - 2¹⁰ = 23640032219 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 23640033243.

It is not an unprimeable number, because it can be changed into a prime (23640033343) 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 15 ways as a sum of consecutive naturals, for example, 2393371 + ... + 2403227.

It is an arithmetic number, because the mean of its divisors is an integer number (1982019906).

Almost surely, 2^23640033243 is an apocalyptic number.

23640033243 is a deficient number, since it is larger than the sum of its proper divisors (8072285253).

23640033243 is a wasteful number, since it uses less digits than its factorization.

23640033243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14654.

The product of its (nonzero) digits is 31104, while the sum is 30.

Adding to 23640033243 its reverse (34233004632), we get a palindrome (57873037875).

The spelling of 23640033243 in words is "twenty-three billion, six hundred forty million, thirty-three thousand, two hundred forty-three".