227666145666 has 16 divisors (see below), whose sum is σ = 456886329984. Its totient is φ = 75629708784.

The previous prime is 227666145589. The next prime is 227666145683. The reversal of 227666145666 is 666541666722.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 64749706 + ... + 64753221.

It is an arithmetic number, because the mean of its divisors is an integer number (28555395624).

Almost surely, 2^227666145666 is an apocalyptic number.

227666145666 is an abundant number, since it is smaller than the sum of its proper divisors (229220184318).

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

227666145666 is a wasteful number, since it uses less digits than its factorization.

227666145666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129503225.

The product of its digits is 26127360, while the sum is 57.

The spelling of 227666145666 in words is "two hundred twenty-seven billion, six hundred sixty-six million, one hundred forty-five thousand, six hundred sixty-six".