663347743365 has 8 divisors (see below), whose sum is σ = 1061356389408. Its totient is φ = 353785463120.

The previous prime is 663347743361. The next prime is 663347743367. The reversal of 663347743365 is 563347743366.

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

It is not a de Polignac number, because 663347743365 - 2² = 663347743361 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (663347743361) 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 7 ways as a sum of consecutive naturals, for example, 22111591431 + ... + 22111591460.

It is an arithmetic number, because the mean of its divisors is an integer number (132669548676).

Almost surely, 2^663347743365 is an apocalyptic number.

It is an amenable number.

663347743365 is a deficient number, since it is larger than the sum of its proper divisors (398008646043).

663347743365 is a wasteful number, since it uses less digits than its factorization.

663347743365 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44223182899.

The product of its digits is 68584320, while the sum is 57.

Subtracting from 663347743365 its reverse (563347743366), we obtain a palindrome (99999999999).

The spelling of 663347743365 in words is "six hundred sixty-three billion, three hundred forty-seven million, seven hundred forty-three thousand, three hundred sixty-five".