6665411843066 has 4 divisors (see below), whose sum is σ = 9998117764602. Its totient is φ = 3332705921532.

The previous prime is 6665411843009. The next prime is 6665411843087. The reversal of 6665411843066 is 6603481145666.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 3582771338041 + 3082640505025 = 1892821^2 + 1755745^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1666352960765 + ... + 1666352960768.

Almost surely, 2^{6665411843066} is an apocalyptic number.

6665411843066 is a deficient number, since it is larger than the sum of its proper divisors (3332705921536).

6665411843066 is a wasteful number, since it uses less digits than its factorization.

6665411843066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3332705921535.

The product of its (nonzero) digits is 14929920, while the sum is 56.

The spelling of 6665411843066 in words is "six trillion, six hundred sixty-five billion, four hundred eleven million, eight hundred forty-three thousand, sixty-six".