166776775264 has 24 divisors (see below), whose sum is σ = 358191029448. Its totient is φ = 75807624960.

The previous prime is 166776775261. The next prime is 166776775271. The reversal of 166776775264 is 462577677661.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 166776775196 and 166776775205.

It is a congruent number.

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

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 236898477 + ... + 236899180.

It is an arithmetic number, because the mean of its divisors is an integer number (14924626227).

Almost surely, 2^166776775264 is an apocalyptic number.

It is an amenable number.

166776775264 is an abundant number, since it is smaller than the sum of its proper divisors (191414254184).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

166776775264 is a wasteful number, since it uses less digits than its factorization.

166776775264 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 473797678 (or 473797670 counting only the distinct ones).

The product of its digits is 124467840, while the sum is 64.

The spelling of 166776775264 in words is "one hundred sixty-six billion, seven hundred seventy-six million, seven hundred seventy-five thousand, two hundred sixty-four".