166221376030 has 16 divisors (see below), whose sum is σ = 299798082000. Its totient is φ = 66355304832.

The previous prime is 166221376007. The next prime is 166221376037. The reversal of 166221376030 is 30673122661.

166221376030 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166221376037) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16650459 + ... + 16660438.

It is an arithmetic number, because the mean of its divisors is an integer number (18737380125).

Almost surely, 2^166221376030 is an apocalyptic number.

166221376030 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

166221376030 is a deficient number, since it is larger than the sum of its proper divisors (133576705970).

166221376030 is a wasteful number, since it uses less digits than its factorization.

166221376030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33311403.

The product of its (nonzero) digits is 54432, while the sum is 37.

Adding to 166221376030 its reverse (30673122661), we get a palindrome (196894498691).

The spelling of 166221376030 in words is "one hundred sixty-six billion, two hundred twenty-one million, three hundred seventy-six thousand, thirty".