166776775268 has 48 divisors (see below), whose sum is σ = 294739845120. Its totient is φ = 82570953504.

The previous prime is 166776775261. The next prime is 166776775271. The reversal of 166776775268 is 862577677661.

166776775268 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 166776775198 and 166776775207.

It is not an unprimeable number, because it can be changed into a prime (166776775261) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 231956213 + ... + 231956931.

It is an arithmetic number, because the mean of its divisors is an integer number (6140413440).

Almost surely, 2^166776775268 is an apocalyptic number.

It is an amenable number.

166776775268 is a deficient number, since it is larger than the sum of its proper divisors (127963069852).

166776775268 is a wasteful number, since it uses less digits than its factorization.

166776775268 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1976 (or 1974 counting only the distinct ones).

The product of its digits is 248935680, while the sum is 68.

The spelling of 166776775268 in words is "one hundred sixty-six billion, seven hundred seventy-six million, seven hundred seventy-five thousand, two hundred sixty-eight".