663566105054665 has 8 divisors (see below), whose sum is σ = 796284570106368. Its totient is φ = 530849388016560.

The previous prime is 663566105054617. The next prime is 663566105054719. The reversal of 663566105054665 is 566450501665366.

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

It is not a de Polignac number, because 663566105054665 - 2¹³ = 663566105046473 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 663566105054597 and 663566105054606.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 436168107 + ... + 437686816.

It is an arithmetic number, because the mean of its divisors is an integer number (99535571263296).

Almost surely, 2^{663566105054665} is an apocalyptic number.

It is an amenable number.

663566105054665 is a deficient number, since it is larger than the sum of its proper divisors (132718465051703).

663566105054665 is a wasteful number, since it uses less digits than its factorization.

663566105054665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 874006799.

The product of its (nonzero) digits is 349920000, while the sum is 64.

The spelling of 663566105054665 in words is "six hundred sixty-three trillion, five hundred sixty-six billion, one hundred five million, fifty-four thousand, six hundred sixty-five".