66170075606266 has 8 divisors (see below), whose sum is σ = 99377802056340. Its totient is φ = 33044141587488.

The previous prime is 66170075606209. The next prime is 66170075606311. The reversal of 66170075606266 is 66260657007166.

It can be written as a sum of positive squares in 2 ways, for example, as 60825633248241 + 5344442358025 = 7799079^2 + 2311805^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 66170075606266.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20448105801 + ... + 20448109036.

Almost surely, 2^{66170075606266} is an apocalyptic number.

66170075606266 is a deficient number, since it is larger than the sum of its proper divisors (33207726450074).

66170075606266 is a wasteful number, since it uses less digits than its factorization.

66170075606266 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40896215648.

The product of its (nonzero) digits is 22861440, while the sum is 58.

The spelling of 66170075606266 in words is "sixty-six trillion, one hundred seventy billion, seventy-five million, six hundred six thousand, two hundred sixty-six".