443404144413421 has 4 divisors (see below), whose sum is σ = 443415611108700. Its totient is φ = 443392677718144.

The previous prime is 443404144413403. The next prime is 443404144413443. The reversal of 443404144413421 is 124314441404344.

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

It can be written as a sum of positive squares in 2 ways, for example, as 178929708884521 + 264474435528900 = 13376461^2 + 16262670^2 .

It is a cyclic number.

It is not a de Polignac number, because 443404144413421 - 2³³ = 443395554478829 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 (443404144419421) 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, 5733289636 + ... + 5733366973.

It is an arithmetic number, because the mean of its divisors is an integer number (110853902777175).

Almost surely, 2^{443404144413421} is an apocalyptic number.

It is an amenable number.

443404144413421 is a deficient number, since it is larger than the sum of its proper divisors (11466695279).

443404144413421 is a wasteful number, since it uses less digits than its factorization.

443404144413421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11466695278.

The product of its (nonzero) digits is 1179648, while the sum is 43.

Adding to 443404144413421 its reverse (124314441404344), we get a palindrome (567718585817765).

The spelling of 443404144413421 in words is "four hundred forty-three trillion, four hundred four billion, one hundred forty-four million, four hundred thirteen thousand, four hundred twenty-one".