666043027029 has 12 divisors (see below), whose sum is σ = 963248427232. Its totient is φ = 443481172200.

The previous prime is 666043026991. The next prime is 666043027031. The reversal of 666043027029 is 920720340666.

It is a de Polignac number, because none of the positive numbers 2^k-666043027029 is a prime.

It is a super-2 number, since 2×666043027029² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (666043027049) 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 11 ways as a sum of consecutive naturals, for example, 45618337 + ... + 45632934.

Almost surely, 2^666043027029 is an apocalyptic number.

It is an amenable number.

666043027029 is a deficient number, since it is larger than the sum of its proper divisors (297205400203).

666043027029 is a wasteful number, since it uses less digits than its factorization.

666043027029 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91252088 (or 91252085 counting only the distinct ones).

The product of its (nonzero) digits is 653184, while the sum is 45.

The spelling of 666043027029 in words is "six hundred sixty-six billion, forty-three million, twenty-seven thousand, twenty-nine".