663443262344366 has 128 divisors (see below), whose sum is σ = 1166708412334080. Its totient is φ = 277107325383168.

The previous prime is 663443262344339. The next prime is 663443262344377.

663443262344366 is nontrivially palindromic in base 10.

It is a junction number, because it is equal to n+sod(n) for n = 663443262344299 and 663443262344308.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 40162426655 + ... + 40162443173.

It is an arithmetic number, because the mean of its divisors is an integer number (9114909471360).

Almost surely, 2^{663443262344366} is an apocalyptic number.

663443262344366 is a deficient number, since it is larger than the sum of its proper divisors (503265149989714).

663443262344366 is a wasteful number, since it uses less digits than its factorization.

663443262344366 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18150.

The product of its digits is 644972544, while the sum is 62.

The spelling of 663443262344366 in words is "six hundred sixty-three trillion, four hundred forty-three billion, two hundred sixty-two million, three hundred forty-four thousand, three hundred sixty-six".