166414560161 has 8 divisors (see below), whose sum is σ = 172258206120. Its totient is φ = 160577928448.

The previous prime is 166414560131. The next prime is 166414560167. The reversal of 166414560161 is 161065414661.

It can be written as a sum of positive squares in 4 ways, for example, as 6958896400 + 159455663761 = 83420^2 + 399319^2 .

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 166414560161 - 2¹⁰ = 166414559137 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (166414560167) 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, 1705256 + ... + 1800201.

It is an arithmetic number, because the mean of its divisors is an integer number (21532275765).

Almost surely, 2^166414560161 is an apocalyptic number.

It is an amenable number.

166414560161 is a deficient number, since it is larger than the sum of its proper divisors (5843645959).

166414560161 is a wasteful number, since it uses less digits than its factorization.

166414560161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3507123.

The product of its (nonzero) digits is 103680, while the sum is 41.

The spelling of 166414560161 in words is "one hundred sixty-six billion, four hundred fourteen million, five hundred sixty thousand, one hundred sixty-one".