6650166560101 has 2 divisors, whose sum is σ = 6650166560102. Its totient is φ = 6650166560100.

The previous prime is 6650166560077. The next prime is 6650166560111. The reversal of 6650166560101 is 1010656610566.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5495981611201 + 1154184948900 = 2344351^2 + 1074330^2 .

It is a cyclic number.

It is not a de Polignac number, because 6650166560101 - 2²⁹ = 6649629689189 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6650166560111) 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, 3325083280050 + 3325083280051.

It is an arithmetic number, because the mean of its divisors is an integer number (3325083280051).

Almost surely, 2^{6650166560101} is an apocalyptic number.

It is an amenable number.

6650166560101 is a deficient number, since it is larger than the sum of its proper divisors (1).

6650166560101 is an equidigital number, since it uses as much as digits as its factorization.

6650166560101 is an odious number, because the sum of its binary digits is odd.

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

The spelling of 6650166560101 in words is "six trillion, six hundred fifty billion, one hundred sixty-six million, five hundred sixty thousand, one hundred one".