666270255212 has 6 divisors (see below), whose sum is σ = 1165972946628. Its totient is φ = 333135127604.

The previous prime is 666270255197. The next prime is 666270255253. The reversal of 666270255212 is 212552072666.

It is a super-4 number, since 4×666270255212⁴ (a number of 48 digits) contains 4444 as substring. Note that it is a super-d number also for d = 3, 2.

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 as a sum of consecutive naturals, namely, 83283781898 + ... + 83283781905.

It is an arithmetic number, because the mean of its divisors is an integer number (194328824438).

Almost surely, 2^666270255212 is an apocalyptic number.

It is an amenable number.

666270255212 is a deficient number, since it is larger than the sum of its proper divisors (499702691416).

666270255212 is a wasteful number, since it uses less digits than its factorization.

666270255212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 166567563807 (or 166567563805 counting only the distinct ones).

The product of its (nonzero) digits is 604800, while the sum is 44.

The spelling of 666270255212 in words is "six hundred sixty-six billion, two hundred seventy million, two hundred fifty-five thousand, two hundred twelve".