166751084161 has 8 divisors (see below), whose sum is σ = 172138063104. Its totient is φ = 161364599760.

The previous prime is 166751084147. The next prime is 166751084167. The reversal of 166751084161 is 161480157661.

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

It is a cyclic number.

It is not a de Polignac number, because 166751084161 - 2³³ = 158161149569 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (166751084167) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 635751 + ... + 858883.

It is an arithmetic number, because the mean of its divisors is an integer number (21517257888).

Almost surely, 2^166751084161 is an apocalyptic number.

It is an amenable number.

166751084161 is a deficient number, since it is larger than the sum of its proper divisors (5386978943).

166751084161 is a wasteful number, since it uses less digits than its factorization.

166751084161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 247271.

The product of its (nonzero) digits is 241920, while the sum is 46.

The spelling of 166751084161 in words is "one hundred sixty-six billion, seven hundred fifty-one million, eighty-four thousand, one hundred sixty-one".