43321444043413 has 4 divisors (see below), whose sum is σ = 43321525887808. Its totient is φ = 43321362199020.

The previous prime is 43321444043401. The next prime is 43321444043443. The reversal of 43321444043413 is 31434044412334.

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 a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-43321444043413 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 (43321444043443) 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, 40123023 + ... + 41188588.

It is an arithmetic number, because the mean of its divisors is an integer number (10830381471952).

Almost surely, 2^{43321444043413} is an apocalyptic number.

It is an amenable number.

43321444043413 is a deficient number, since it is larger than the sum of its proper divisors (81844395).

43321444043413 is an equidigital number, since it uses as much as digits as its factorization.

43321444043413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81844394.

The product of its (nonzero) digits is 663552, while the sum is 40.

Adding to 43321444043413 its reverse (31434044412334), we get a palindrome (74755488455747).

The spelling of 43321444043413 in words is "forty-three trillion, three hundred twenty-one billion, four hundred forty-four million, forty-three thousand, four hundred thirteen".