11630720666 has 8 divisors (see below), whose sum is σ = 17482504320. Its totient is φ = 5803219228.

The previous prime is 11630720641. The next prime is 11630720671. The reversal of 11630720666 is 66602703611.

It is a happy number.

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6069356 + ... + 6071271.

It is an arithmetic number, because the mean of its divisors is an integer number (2185313040).

Almost surely, 2^11630720666 is an apocalyptic number.

11630720666 is a deficient number, since it is larger than the sum of its proper divisors (5851783654).

11630720666 is a wasteful number, since it uses less digits than its factorization.

11630720666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12141108.

The product of its (nonzero) digits is 54432, while the sum is 38.

The spelling of 11630720666 in words is "eleven billion, six hundred thirty million, seven hundred twenty thousand, six hundred sixty-six".