11493684666 has 96 divisors (see below), whose sum is σ = 27327877200. Its totient is φ = 3475046400.

The previous prime is 11493684647. The next prime is 11493684673. The reversal of 11493684666 is 66648639411.

It can be written as a sum of positive squares in 8 ways, for example, as 11473623225 + 20061441 = 107115^2 + 4479^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 7178266 + ... + 7179866.

Almost surely, 2^11493684666 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11493684666, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13663938600).

11493684666 is an abundant number, since it is smaller than the sum of its proper divisors (15834192534).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11493684666 is a wasteful number, since it uses less digits than its factorization.

11493684666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2464 (or 2461 counting only the distinct ones).

The product of its digits is 4478976, while the sum is 54.

The spelling of 11493684666 in words is "eleven billion, four hundred ninety-three million, six hundred eighty-four thousand, six hundred sixty-six".