166344861166 has 32 divisors (see below), whose sum is σ = 275768524800. Its totient is φ = 74621083680.

The previous prime is 166344861131. The next prime is 166344861169. The reversal of 166344861166 is 661168443661.

It is a super-2 number, since 2×166344861166² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166344861169) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4132051 + ... + 4172113.

It is an arithmetic number, because the mean of its divisors is an integer number (8617766400).

Almost surely, 2^166344861166 is an apocalyptic number.

166344861166 is a deficient number, since it is larger than the sum of its proper divisors (109423663634).

166344861166 is a wasteful number, since it uses less digits than its factorization.

166344861166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42544.

The product of its digits is 2985984, while the sum is 52.

The spelling of 166344861166 in words is "one hundred sixty-six billion, three hundred forty-four million, eight hundred sixty-one thousand, one hundred sixty-six".