1066005611566 has 8 divisors (see below), whose sum is σ = 1827438191280. Its totient is φ = 456859547808.

The previous prime is 1066005611543. The next prime is 1066005611591. The reversal of 1066005611566 is 6651165006601.

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

It is a super-2 number, since 2×1066005611566² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 38071628971 + ... + 38071628998.

It is an arithmetic number, because the mean of its divisors is an integer number (228429773910).

Almost surely, 2^{1066005611566} is an apocalyptic number.

1066005611566 is a deficient number, since it is larger than the sum of its proper divisors (761432579714).

1066005611566 is an equidigital number, since it uses as much as digits as its factorization.

1066005611566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76143257978.

The product of its (nonzero) digits is 194400, while the sum is 43.

The spelling of 1066005611566 in words is "one trillion, sixty-six billion, five million, six hundred eleven thousand, five hundred sixty-six".