205443141323423 has 4 divisors (see below), whose sum is σ = 205692768470448. Its totient is φ = 205193514176400.

The previous prime is 205443141323393. The next prime is 205443141323437. The reversal of 205443141323423 is 324323141344502.

It is a happy number.

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 205443141323423 - 2¹⁴ = 205443141307039 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 (205443141323443) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 124813572278 + ... + 124813573923.

It is an arithmetic number, because the mean of its divisors is an integer number (51423192117612).

Almost surely, 2^{205443141323423} is an apocalyptic number.

205443141323423 is a deficient number, since it is larger than the sum of its proper divisors (249627147025).

205443141323423 is an equidigital number, since it uses as much as digits as its factorization.

205443141323423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 249627147024.

The product of its (nonzero) digits is 829440, while the sum is 41.

Adding to 205443141323423 its reverse (324323141344502), we get a palindrome (529766282667925).

The spelling of 205443141323423 in words is "two hundred five trillion, four hundred forty-three billion, one hundred forty-one million, three hundred twenty-three thousand, four hundred twenty-three".