43520135223 has 4 divisors (see below), whose sum is σ = 58026846968. Its totient is φ = 29013423480.

The previous prime is 43520135207. The next prime is 43520135273. The reversal of 43520135223 is 32253102534.

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

It is not a de Polignac number, because 43520135223 - 2⁴ = 43520135207 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 (43520135273) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7253355868 + ... + 7253355873.

It is an arithmetic number, because the mean of its divisors is an integer number (14506711742).

Almost surely, 2^43520135223 is an apocalyptic number.

43520135223 is a deficient number, since it is larger than the sum of its proper divisors (14506711745).

43520135223 is a wasteful number, since it uses less digits than its factorization.

43520135223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14506711744.

The product of its (nonzero) digits is 21600, while the sum is 30.

Adding to 43520135223 its reverse (32253102534), we get a palindrome (75773237757).

The spelling of 43520135223 in words is "forty-three billion, five hundred twenty million, one hundred thirty-five thousand, two hundred twenty-three".