190666746667 has 4 divisors (see below), whose sum is σ = 190848508200. Its totient is φ = 190484985136.

The previous prime is 190666746661. The next prime is 190666746761. The reversal of 190666746667 is 766647666091.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 766647666091 = 678133 ⋅1130527.

It is a cyclic number.

It is not a de Polignac number, because 190666746667 - 2⁷ = 190666746539 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 190666746599 and 190666746608.

It is not an unprimeable number, because it can be changed into a prime (190666746661) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 90879193 + ... + 90881290.

It is an arithmetic number, because the mean of its divisors is an integer number (47712127050).

Almost surely, 2^190666746667 is an apocalyptic number.

190666746667 is a deficient number, since it is larger than the sum of its proper divisors (181761533).

190666746667 is a wasteful number, since it uses less digits than its factorization.

190666746667 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 181761532.

The product of its (nonzero) digits is 82301184, while the sum is 64.

The spelling of 190666746667 in words is "one hundred ninety billion, six hundred sixty-six million, seven hundred forty-six thousand, six hundred sixty-seven".