441811263646381 has 8 divisors (see below), whose sum is σ = 442347972388920. Its totient is φ = 441274563975168.

The previous prime is 441811263646369. The next prime is 441811263646427. The reversal of 441811263646381 is 183646362118144.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 299709152652100 + 142102110994281 = 17312110^2 + 11920659^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 441811263646381 - 2³⁵ = 441776903908013 is a prime.

It is a super-2 number, since 2×441811263646381² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (441811263641381) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 97883925 + ... + 102298021.

It is an arithmetic number, because the mean of its divisors is an integer number (55293496548615).

Almost surely, 2^{441811263646381} is an apocalyptic number.

It is an amenable number.

441811263646381 is a deficient number, since it is larger than the sum of its proper divisors (536708742539).

441811263646381 is a wasteful number, since it uses less digits than its factorization.

441811263646381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4535663.

The product of its digits is 15925248, while the sum is 58.

The spelling of 441811263646381 in words is "four hundred forty-one trillion, eight hundred eleven billion, two hundred sixty-three million, six hundred forty-six thousand, three hundred eighty-one".