166776775198 has 16 divisors (see below), whose sum is σ = 272988817920. Its totient is φ = 75785023000.

The previous prime is 166776775159. The next prime is 166776775199. The reversal of 166776775198 is 891577677661.

166776775198 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 (166776775199) 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, 1054528 + ... + 1202323.

It is an arithmetic number, because the mean of its divisors is an integer number (17061801120).

Almost surely, 2^166776775198 is an apocalyptic number.

166776775198 is a deficient number, since it is larger than the sum of its proper divisors (106212042722).

166776775198 is a wasteful number, since it uses less digits than its factorization.

166776775198 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2260223.

The product of its digits is 186701760, while the sum is 70.

The spelling of 166776775198 in words is "one hundred sixty-six billion, seven hundred seventy-six million, seven hundred seventy-five thousand, one hundred ninety-eight".