10663408666 has 8 divisors (see below), whose sum is σ = 16076307060. Its totient is φ = 5304639648.

The previous prime is 10663408631. The next prime is 10663408667. The reversal of 10663408666 is 66680436601.

It can be written as a sum of positive squares in 2 ways, for example, as 10133442225 + 529966441 = 100665^2 + 23021^2 .

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

It is a super-2 number, since 2×10663408666² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (10663408667) 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, 13531851 + ... + 13532638.

Almost surely, 2^10663408666 is an apocalyptic number.

10663408666 is a deficient number, since it is larger than the sum of its proper divisors (5412898394).

10663408666 is a wasteful number, since it uses less digits than its factorization.

10663408666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27064688.

The product of its (nonzero) digits is 746496, while the sum is 46.

The spelling of 10663408666 in words is "ten billion, six hundred sixty-three million, four hundred eight thousand, six hundred sixty-six".