666043027069 has 8 divisors (see below), whose sum is σ = 761205852288. Its totient is φ = 570883657200.

The previous prime is 666043027049. The next prime is 666043027087. The reversal of 666043027069 is 960720340666.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 666043027069 - 2²⁷ = 665908809341 is a prime.

It is a super-2 number, since 2×666043027069² (a number of 24 digits) contains 22 as substring.

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 (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 436702 + ... + 1234015.

It is an arithmetic number, because the mean of its divisors is an integer number (95150731536).

Almost surely, 2^666043027069 is an apocalyptic number.

It is an amenable number.

666043027069 is a deficient number, since it is larger than the sum of its proper divisors (95162825219).

666043027069 is a wasteful number, since it uses less digits than its factorization.

666043027069 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1727675.

The product of its (nonzero) digits is 1959552, while the sum is 49.

The spelling of 666043027069 in words is "six hundred sixty-six billion, forty-three million, twenty-seven thousand, sixty-nine".