4566781663 has 2 divisors, whose sum is σ = 4566781664. Its totient is φ = 4566781662.

The previous prime is 4566781643. The next prime is 4566781691. The reversal of 4566781663 is 3661876654.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 4566781663 - 2²¹ = 4564684511 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 4566781663.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4566781643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2283390831 + 2283390832.

It is an arithmetic number, because the mean of its divisors is an integer number (2283390832).

Almost surely, 2^4566781663 is an apocalyptic number.

4566781663 is a deficient number, since it is larger than the sum of its proper divisors (1).

4566781663 is an equidigital number, since it uses as much as digits as its factorization.

4566781663 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4354560, while the sum is 52.

The square root of 4566781663 is about 67577.9672896426. The cubic root of 4566781663 is about 1659.0905240919.

The spelling of 4566781663 in words is "four billion, five hundred sixty-six million, seven hundred eighty-one thousand, six hundred sixty-three".