43320433321 has 4 divisors (see below), whose sum is σ = 47258654544. Its totient is φ = 39382212100.

The previous prime is 43320433297. The next prime is 43320433327. The reversal of 43320433321 is 12333402334.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 43320433321 - 2¹³ = 43320425129 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 43320433321.

It is not an unprimeable number, because it can be changed into a prime (43320433327) 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, 1969110595 + ... + 1969110616.

It is an arithmetic number, because the mean of its divisors is an integer number (11814663636).

Almost surely, 2^43320433321 is an apocalyptic number.

It is an amenable number.

43320433321 is a deficient number, since it is larger than the sum of its proper divisors (3938221223).

43320433321 is a wasteful number, since it uses less digits than its factorization.

43320433321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3938221222.

The product of its (nonzero) digits is 15552, while the sum is 28.

Adding to 43320433321 its reverse (12333402334), we get a palindrome (55653835655).

The spelling of 43320433321 in words is "forty-three billion, three hundred twenty million, four hundred thirty-three thousand, three hundred twenty-one".