166266160 has 40 divisors (see below), whose sum is σ = 397023696. Its totient is φ = 64707840.

The previous prime is 166266157. The next prime is 166266161. The reversal of 166266160 is 61662661.

It is a tau number, because it is divible by the number of its divisors (40).

It is a super-2 number, since 2×166266160² = 55288871922291200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (166266161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25126 + ... + 31045.

Almost surely, 2^166266160 is an apocalyptic number.

166266160 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

166266160 is an abundant number, since it is smaller than the sum of its proper divisors (230757536).

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

166266160 is a wasteful number, since it uses less digits than its factorization.

166266160 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56221 (or 56215 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 34.

The square root of 166266160 is about 12894.4236009214. The cubic root of 166266160 is about 549.8800399532.

The spelling of 166266160 in words is "one hundred sixty-six million, two hundred sixty-six thousand, one hundred sixty".