10001666605303 has 2 divisors, whose sum is σ = 10001666605304. Its totient is φ = 10001666605302.

The previous prime is 10001666605277. The next prime is 10001666605321. The reversal of 10001666605303 is 30350666610001.

It is a strong prime.

It is an emirp because it is prime and its reverse (30350666610001) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10001666605303 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10001666605373) 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 as a sum of consecutive naturals, namely, 5000833302651 + 5000833302652.

It is an arithmetic number, because the mean of its divisors is an integer number (5000833302652).

Almost surely, 2^{10001666605303} is an apocalyptic number.

10001666605303 is a deficient number, since it is larger than the sum of its proper divisors (1).

10001666605303 is an equidigital number, since it uses as much as digits as its factorization.

10001666605303 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 58320, while the sum is 37.

The spelling of 10001666605303 in words is "ten trillion, one billion, six hundred sixty-six million, six hundred five thousand, three hundred three".