4660646456489 has 2 divisors, whose sum is σ = 4660646456490. Its totient is φ = 4660646456488.

The previous prime is 4660646456381. The next prime is 4660646456519. The reversal of 4660646456489 is 9846546460664.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4212694675225 + 447951781264 = 2052485^2 + 669292^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4660646456489 is a prime.

It is a super-3 number, since 3×4660646456489³ (a number of 39 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (4660646056489) 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, 2330323228244 + 2330323228245.

It is an arithmetic number, because the mean of its divisors is an integer number (2330323228245).

Almost surely, 2^{4660646456489} is an apocalyptic number.

It is an amenable number.

4660646456489 is a deficient number, since it is larger than the sum of its proper divisors (1).

4660646456489 is an equidigital number, since it uses as much as digits as its factorization.

4660646456489 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 716636160, while the sum is 68.

The spelling of 4660646456489 in words is "four trillion, six hundred sixty billion, six hundred forty-six million, four hundred fifty-six thousand, four hundred eighty-nine".