65551709166 has 8 divisors (see below), whose sum is σ = 131103418344. Its totient is φ = 21850569720.

The previous prime is 65551709161. The next prime is 65551709231. The reversal of 65551709166 is 66190715556.

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

65551709166 is an admirable number.

It is a Smith number, since the sum of its digits (51) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65551709161) 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, 5462642425 + ... + 5462642436.

It is an arithmetic number, because the mean of its divisors is an integer number (16387927293).

Almost surely, 2^65551709166 is an apocalyptic number.

65551709166 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

65551709166 is a wasteful number, since it uses less digits than its factorization.

65551709166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10925284866.

The product of its (nonzero) digits is 1701000, while the sum is 51.

The spelling of 65551709166 in words is "sixty-five billion, five hundred fifty-one million, seven hundred nine thousand, one hundred sixty-six".