166161200 has 60 divisors (see below), whose sum is σ = 416581968. Its totient is φ = 63571200.

The previous prime is 166161199. The next prime is 166161217. The reversal of 166161200 is 2161661.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 170 + ... + 18230.

Almost surely, 2^166161200 is an apocalyptic number.

166161200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 166161200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (208290984).

166161200 is an abundant number, since it is smaller than the sum of its proper divisors (250420768).

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

166161200 is a wasteful number, since it uses less digits than its factorization.

166161200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18102 (or 18091 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 23.

The square root of 166161200 is about 12890.3529819784. The cubic root of 166161200 is about 549.7643067255.

The spelling of 166161200 in words is "one hundred sixty-six million, one hundred sixty-one thousand, two hundred".