23205147443 has 2 divisors, whose sum is σ = 23205147444. Its totient is φ = 23205147442.

The previous prime is 23205147421. The next prime is 23205147457. The reversal of 23205147443 is 34474150232.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 23205147443 - 2¹² = 23205143347 is a prime.

It is not a weakly prime, because it can be changed into another prime (23205147403) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11602573721 + 11602573722.

It is an arithmetic number, because the mean of its divisors is an integer number (11602573722).

Almost surely, 2^23205147443 is an apocalyptic number.

23205147443 is a deficient number, since it is larger than the sum of its proper divisors (1).

23205147443 is an equidigital number, since it uses as much as digits as its factorization.

23205147443 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 80640, while the sum is 35.

Adding to 23205147443 its reverse (34474150232), we get a palindrome (57679297675).

The spelling of 23205147443 in words is "twenty-three billion, two hundred five million, one hundred forty-seven thousand, four hundred forty-three".