666146773226 has 32 divisors (see below), whose sum is σ = 1112343331968. Its totient is φ = 296621391040.

The previous prime is 666146773213. The next prime is 666146773267. The reversal of 666146773226 is 622377641666.

It is a Curzon number.

It is an unprimeable number.

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, 312896 + ... + 1195908.

It is an arithmetic number, because the mean of its divisors is an integer number (34760729124).

Almost surely, 2^666146773226 is an apocalyptic number.

666146773226 is a deficient number, since it is larger than the sum of its proper divisors (446196558742).

666146773226 is a wasteful number, since it uses less digits than its factorization.

666146773226 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 883726.

The product of its digits is 18289152, while the sum is 56.

The spelling of 666146773226 in words is "six hundred sixty-six billion, one hundred forty-six million, seven hundred seventy-three thousand, two hundred twenty-six".