23253440447 has 2 divisors, whose sum is σ = 23253440448. Its totient is φ = 23253440446.

The previous prime is 23253440437. The next prime is 23253440489. The reversal of 23253440447 is 74404435232.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 23253440447 - 2¹⁸ = 23253178303 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 23253440447.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23253440437) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11626720223 + 11626720224.

It is an arithmetic number, because the mean of its divisors is an integer number (11626720224).

Almost surely, 2^23253440447 is an apocalyptic number.

23253440447 is a deficient number, since it is larger than the sum of its proper divisors (1).

23253440447 is an equidigital number, since it uses as much as digits as its factorization.

23253440447 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 322560, while the sum is 38.

Adding to 23253440447 its reverse (74404435232), we get a palindrome (97657875679).

The spelling of 23253440447 in words is "twenty-three billion, two hundred fifty-three million, four hundred forty thousand, four hundred forty-seven".