23523566243 has 4 divisors (see below), whose sum is σ = 23576667288. Its totient is φ = 23470465200.

The previous prime is 23523566233. The next prime is 23523566249. The reversal of 23523566243 is 34266532532.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 23523566243 - 2⁸ = 23523565987 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 23523566243.

It is not an unprimeable number, because it can be changed into a prime (23523566249) 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 3 ways as a sum of consecutive naturals, for example, 26549858 + ... + 26550743.

It is an arithmetic number, because the mean of its divisors is an integer number (5894166822).

Almost surely, 2^23523566243 is an apocalyptic number.

23523566243 is a deficient number, since it is larger than the sum of its proper divisors (53101045).

23523566243 is an equidigital number, since it uses as much as digits as its factorization.

23523566243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53101044.

The product of its digits is 777600, while the sum is 41.

The spelling of 23523566243 in words is "twenty-three billion, five hundred twenty-three million, five hundred sixty-six thousand, two hundred forty-three".