165051100066 has 8 divisors (see below), whose sum is σ = 247858952220. Its totient is φ = 82431449328.

The previous prime is 165051100061. The next prime is 165051100069. The reversal of 165051100066 is 660001150561.

It can be written as a sum of positive squares in 2 ways, for example, as 126270069025 + 38781031041 = 355345^2 + 196929^2 .

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

It is not an unprimeable number, because it can be changed into a prime (165051100061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 47048161 + ... + 47051668.

Almost surely, 2^165051100066 is an apocalyptic number.

165051100066 is a deficient number, since it is larger than the sum of its proper divisors (82807852154).

165051100066 is an equidigital number, since it uses as much as digits as its factorization.

165051100066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94100708.

The product of its (nonzero) digits is 5400, while the sum is 31.

The spelling of 165051100066 in words is "one hundred sixty-five billion, fifty-one million, one hundred thousand, sixty-six".