666011102072 has 16 divisors (see below), whose sum is σ = 1282521379560. Its totient is φ = 324005400864.

The previous prime is 666011102063. The next prime is 666011102087. The reversal of 666011102072 is 270201110666.

It is a super-3 number, since 3×666011102072³ (a number of 36 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1125018458 + ... + 1125019049.

Almost surely, 2^666011102072 is an apocalyptic number.

It is an amenable number.

666011102072 is a deficient number, since it is larger than the sum of its proper divisors (616510277488).

666011102072 is a wasteful number, since it uses less digits than its factorization.

666011102072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2250037550 (or 2250037546 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 32.

The spelling of 666011102072 in words is "six hundred sixty-six billion, eleven million, one hundred two thousand, seventy-two".