1666055006041 has 4 divisors (see below), whose sum is σ = 1684774725300. Its totient is φ = 1647335286784.

The previous prime is 1666055006027. The next prime is 1666055006081. The reversal of 1666055006041 is 1406005506661.

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

It can be written as a sum of positive squares in 2 ways, for example, as 148221150025 + 1517833856016 = 384995^2 + 1232004^2 .

It is a cyclic number.

It is not a de Polignac number, because 1666055006041 - 2⁹ = 1666055005529 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1666055005985 and 1666055006003.

It is not an unprimeable number, because it can be changed into a prime (1666055006081) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 9359859496 + ... + 9359859673.

It is an arithmetic number, because the mean of its divisors is an integer number (421193681325).

Almost surely, 2^{1666055006041} is an apocalyptic number.

It is an amenable number.

1666055006041 is a deficient number, since it is larger than the sum of its proper divisors (18719719259).

1666055006041 is an equidigital number, since it uses as much as digits as its factorization.

1666055006041 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18719719258.

The product of its (nonzero) digits is 129600, while the sum is 40.

The spelling of 1666055006041 in words is "one trillion, six hundred sixty-six billion, fifty-five million, six thousand, forty-one".