40321055443 has 4 divisors (see below), whose sum is σ = 41081830128. Its totient is φ = 39560280760.

The previous prime is 40321055377. The next prime is 40321055461. The reversal of 40321055443 is 34455012304.

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 40321055443 - 2³³ = 31731120851 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40321056443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 380387263 + ... + 380387368.

It is an arithmetic number, because the mean of its divisors is an integer number (10270457532).

Almost surely, 2^40321055443 is an apocalyptic number.

40321055443 is a deficient number, since it is larger than the sum of its proper divisors (760774685).

40321055443 is an equidigital number, since it uses as much as digits as its factorization.

40321055443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 760774684.

The product of its (nonzero) digits is 28800, while the sum is 31.

Adding to 40321055443 its reverse (34455012304), we get a palindrome (74776067747).

The spelling of 40321055443 in words is "forty billion, three hundred twenty-one million, fifty-five thousand, four hundred forty-three".