4566610644889 has 2 divisors, whose sum is σ = 4566610644890. Its totient is φ = 4566610644888.

The previous prime is 4566610644859. The next prime is 4566610645007. The reversal of 4566610644889 is 9884460166654.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4320661104400 + 245949540489 = 2078620^2 + 495933^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4566610644889 is a prime.

It is not a weakly prime, because it can be changed into another prime (4566610644859) 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, 2283305322444 + 2283305322445.

It is an arithmetic number, because the mean of its divisors is an integer number (2283305322445).

Almost surely, 2^{4566610644889} is an apocalyptic number.

It is an amenable number.

4566610644889 is a deficient number, since it is larger than the sum of its proper divisors (1).

4566610644889 is an equidigital number, since it uses as much as digits as its factorization.

4566610644889 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 238878720, while the sum is 67.

The spelling of 4566610644889 in words is "four trillion, five hundred sixty-six billion, six hundred ten million, six hundred forty-four thousand, eight hundred eighty-nine".