196001786666 has 16 divisors (see below), whose sum is σ = 336465257856. Its totient is φ = 83885216976.

The previous prime is 196001786663. The next prime is 196001786683. The reversal of 196001786666 is 666687100691.

It is a happy number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (196001786663) 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, 9618521 + ... + 9638876.

It is an arithmetic number, because the mean of its divisors is an integer number (21029078616).

Almost surely, 2^196001786666 is an apocalyptic number.

196001786666 is a deficient number, since it is larger than the sum of its proper divisors (140463471190).

196001786666 is a wasteful number, since it uses less digits than its factorization.

196001786666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19258133.

The product of its (nonzero) digits is 3919104, while the sum is 56.

The spelling of 196001786666 in words is "one hundred ninety-six billion, one million, seven hundred eighty-six thousand, six hundred sixty-six".