663704406133 has 4 divisors (see below), whose sum is σ = 668548963980. Its totient is φ = 658859848288.

The previous prime is 663704406091. The next prime is 663704406187. The reversal of 663704406133 is 331604407366.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 331604407366 = 2 ⋅165802203683.

It can be written as a sum of positive squares in 2 ways, for example, as 534994233489 + 128710172644 = 731433^2 + 358762^2 .

It is a cyclic number.

It is not a de Polignac number, because 663704406133 - 2¹⁷ = 663704275061 is a prime.

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 663704406133.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (663704407133) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2422278718 + ... + 2422278991.

It is an arithmetic number, because the mean of its divisors is an integer number (167137240995).

Almost surely, 2^663704406133 is an apocalyptic number.

It is an amenable number.

663704406133 is a deficient number, since it is larger than the sum of its proper divisors (4844557847).

663704406133 is a wasteful number, since it uses less digits than its factorization.

663704406133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4844557846.

The product of its (nonzero) digits is 653184, while the sum is 43.

The spelling of 663704406133 in words is "six hundred sixty-three billion, seven hundred four million, four hundred six thousand, one hundred thirty-three".