663116356145 has 8 divisors (see below), whose sum is σ = 796046522856. Its totient is φ = 530288487936.

The previous prime is 663116356139. The next prime is 663116356213. The reversal of 663116356145 is 541653611366.

It can be written as a sum of positive squares in 4 ways, for example, as 5291544049 + 657824812096 = 72743^2 + 811064^2 .

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 663116356145 - 2¹² = 663116352049 is a prime.

It is a super-2 number, since 2×663116356145² (a number of 24 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 663116356145.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25560362 + ... + 25586291.

It is an arithmetic number, because the mean of its divisors is an integer number (99505815357).

Almost surely, 2^663116356145 is an apocalyptic number.

It is an amenable number.

663116356145 is a deficient number, since it is larger than the sum of its proper divisors (132930166711).

663116356145 is a wasteful number, since it uses less digits than its factorization.

663116356145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51149251.

The product of its digits is 1166400, while the sum is 47.

The spelling of 663116356145 in words is "six hundred sixty-three billion, one hundred sixteen million, three hundred fifty-six thousand, one hundred forty-five".