161066166 has 16 divisors (see below), whose sum is σ = 322448688. Its totient is φ = 53636000.

The previous prime is 161066161. The next prime is 161066179. The reversal of 161066166 is 661660161.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161066161) 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, 6285 + ... + 19016.

It is an arithmetic number, because the mean of its divisors is an integer number (20153043).

Almost surely, 2^161066166 is an apocalyptic number.

161066166 is an abundant number, since it is smaller than the sum of its proper divisors (161382522).

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

161066166 is a wasteful number, since it uses less digits than its factorization.

161066166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26367.

The product of its (nonzero) digits is 7776, while the sum is 33.

The square root of 161066166 is about 12691.1845782811. The cubic root of 161066166 is about 544.0866963722.

It can be divided in two parts, 1610 and 66166, that added together give a palindrome (67776).

The spelling of 161066166 in words is "one hundred sixty-one million, sixty-six thousand, one hundred sixty-six".