43224421523 has 8 divisors (see below), whose sum is σ = 43303498128. Its totient is φ = 43145406304.

The previous prime is 43224421463. The next prime is 43224421531. The reversal of 43224421523 is 32512442234.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 43224421523 - 2²⁰ = 43223372947 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 43224421523.

It is not an unprimeable number, because it can be changed into a prime (43224421543) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1534361 + ... + 1562277.

It is an arithmetic number, because the mean of its divisors is an integer number (5412937266).

Almost surely, 2^43224421523 is an apocalyptic number.

43224421523 is a deficient number, since it is larger than the sum of its proper divisors (79076605).

43224421523 is a wasteful number, since it uses less digits than its factorization.

43224421523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30693.

The product of its digits is 46080, while the sum is 32.

Adding to 43224421523 its reverse (32512442234), we get a palindrome (75736863757).

The spelling of 43224421523 in words is "forty-three billion, two hundred twenty-four million, four hundred twenty-one thousand, five hundred twenty-three".