201679745066 has 8 divisors (see below), whose sum is σ = 302884541220. Its totient is φ = 100718231328.

The previous prime is 201679745053. The next prime is 201679745081. The reversal of 201679745066 is 660547976102.

201679745066 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 179636107225 + 22043637841 = 423835^2 + 148471^2 .

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

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 201679744999 and 201679745017.

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, 60818531 + ... + 60821846.

Almost surely, 2^201679745066 is an apocalyptic number.

201679745066 is a deficient number, since it is larger than the sum of its proper divisors (101204796154).

201679745066 is a wasteful number, since it uses less digits than its factorization.

201679745066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121641208.

The product of its (nonzero) digits is 3810240, while the sum is 53.

The spelling of 201679745066 in words is "two hundred one billion, six hundred seventy-nine million, seven hundred forty-five thousand, sixty-six".