166507202111 has 16 divisors (see below), whose sum is σ = 176622465600. Its totient is φ = 156691180800.

The previous prime is 166507202089. The next prime is 166507202123. The reversal of 166507202111 is 111202705661.

166507202111 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 166507202111 - 2⁶ = 166507202047 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166507202011) 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 15 ways as a sum of consecutive naturals, for example, 1157945 + ... + 1293773.

It is an arithmetic number, because the mean of its divisors is an integer number (11038904100).

Almost surely, 2^166507202111 is an apocalyptic number.

166507202111 is a deficient number, since it is larger than the sum of its proper divisors (10115263489).

166507202111 is a wasteful number, since it uses less digits than its factorization.

166507202111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136930.

The product of its (nonzero) digits is 5040, while the sum is 32.

Adding to 166507202111 its reverse (111202705661), we get a palindrome (277709907772).

The spelling of 166507202111 in words is "one hundred sixty-six billion, five hundred seven million, two hundred two thousand, one hundred eleven".