23503042447 has 4 divisors (see below), whose sum is σ = 23503364280. Its totient is φ = 23502720616.

The previous prime is 23503042441. The next prime is 23503042573. The reversal of 23503042447 is 74424030532.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 23503042447 - 2⁷ = 23503042319 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23503042441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7113 + ... + 216925.

It is an arithmetic number, because the mean of its divisors is an integer number (5875841070).

Almost surely, 2^23503042447 is an apocalyptic number.

23503042447 is a deficient number, since it is larger than the sum of its proper divisors (321833).

23503042447 is a wasteful number, since it uses less digits than its factorization.

23503042447 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 321832.

The product of its (nonzero) digits is 80640, while the sum is 34.

Adding to 23503042447 its reverse (74424030532), we get a palindrome (97927072979).

The spelling of 23503042447 in words is "twenty-three billion, five hundred three million, forty-two thousand, four hundred forty-seven".