116561660666 has 8 divisors (see below), whose sum is σ = 190737262944. Its totient is φ = 52982573020.

The previous prime is 116561660609. The next prime is 116561660671. The reversal of 116561660666 is 666066165611.

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, 2649128630 + ... + 2649128673.

It is an arithmetic number, because the mean of its divisors is an integer number (23842157868).

Almost surely, 2^116561660666 is an apocalyptic number.

116561660666 is a deficient number, since it is larger than the sum of its proper divisors (74175602278).

116561660666 is a wasteful number, since it uses less digits than its factorization.

116561660666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5298257316.

The product of its (nonzero) digits is 1399680, while the sum is 50.

The spelling of 116561660666 in words is "one hundred sixteen billion, five hundred sixty-one million, six hundred sixty thousand, six hundred sixty-six".