11660606661 has 8 divisors (see below), whose sum is σ = 16960882464. Its totient is φ = 7067034320.

The previous prime is 11660606653. The next prime is 11660606753. The reversal of 11660606661 is 16660606611.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 11660606661 - 2³ = 11660606653 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11668606661) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 176675826 + ... + 176675891.

It is an arithmetic number, because the mean of its divisors is an integer number (2120110308).

Almost surely, 2^11660606661 is an apocalyptic number.

11660606661 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

11660606661 is a deficient number, since it is larger than the sum of its proper divisors (5300275803).

11660606661 is a wasteful number, since it uses less digits than its factorization.

11660606661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 353351731.

The product of its (nonzero) digits is 46656, while the sum is 39.

The spelling of 11660606661 in words is "eleven billion, six hundred sixty million, six hundred six thousand, six hundred sixty-one".