4664600206661 has 2 divisors, whose sum is σ = 4664600206662. Its totient is φ = 4664600206660.

The previous prime is 4664600206649. The next prime is 4664600206691. The reversal of 4664600206661 is 1666020064664.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3116305273636 + 1548294933025 = 1765306^2 + 1244305^2 .

It is a cyclic number.

It is not a de Polignac number, because 4664600206661 - 2¹⁸ = 4664599944517 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4664600206621) 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 as a sum of consecutive naturals, namely, 2332300103330 + 2332300103331.

It is an arithmetic number, because the mean of its divisors is an integer number (2332300103331).

Almost surely, 2^{4664600206661} is an apocalyptic number.

It is an amenable number.

4664600206661 is a deficient number, since it is larger than the sum of its proper divisors (1).

4664600206661 is an equidigital number, since it uses as much as digits as its factorization.

4664600206661 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1492992, while the sum is 47.

The spelling of 4664600206661 in words is "four trillion, six hundred sixty-four billion, six hundred million, two hundred six thousand, six hundred sixty-one".