440622461641 has 2 divisors, whose sum is σ = 440622461642. Its totient is φ = 440622461640.

The previous prime is 440622461639. The next prime is 440622461647. The reversal of 440622461641 is 146164226044.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 230587238025 + 210035223616 = 480195^2 + 458296^2 .

It is a cyclic number.

It is not a de Polignac number, because 440622461641 - 2¹ = 440622461639 is a prime.

Together with 440622461639, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 440622461594 and 440622461603.

It is not a weakly prime, because it can be changed into another prime (440622461647) 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 as a sum of consecutive naturals, namely, 220311230820 + 220311230821.

It is an arithmetic number, because the mean of its divisors is an integer number (220311230821).

Almost surely, 2^440622461641 is an apocalyptic number.

It is an amenable number.

440622461641 is a deficient number, since it is larger than the sum of its proper divisors (1).

440622461641 is an equidigital number, since it uses as much as digits as its factorization.

440622461641 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 221184, while the sum is 40.

Adding to 440622461641 its reverse (146164226044), we get a palindrome (586786687685).

The spelling of 440622461641 in words is "four hundred forty billion, six hundred twenty-two million, four hundred sixty-one thousand, six hundred forty-one".