863441144369 has 8 divisors (see below), whose sum is σ = 865176343272. Its totient is φ = 861706460160.

The previous prime is 863441144351. The next prime is 863441144389. The reversal of 863441144369 is 963441144368.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 163307316769 + 700133827600 = 404113^2 + 836740^2 .

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 863441144369 - 2²⁴ = 863424367153 is a prime.

It is a super-2 number, since 2×863441144369² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 863441144369.

It is not an unprimeable number, because it can be changed into a prime (863441144329) 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, 3322577 + ... + 3573009.

It is an arithmetic number, because the mean of its divisors is an integer number (108147042909).

Almost surely, 2^863441144369 is an apocalyptic number.

It is an amenable number.

863441144369 is a deficient number, since it is larger than the sum of its proper divisors (1735198903).

863441144369 is a wasteful number, since it uses less digits than its factorization.

863441144369 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 257347.

The product of its digits is 5971968, while the sum is 53.

Subtracting 863441144369 from its reverse (963441144368), we obtain a palindrome (99999999999).

The spelling of 863441144369 in words is "eight hundred sixty-three billion, four hundred forty-one million, one hundred forty-four thousand, three hundred sixty-nine".