810144220663 has 2 divisors, whose sum is σ = 810144220664. Its totient is φ = 810144220662.

The previous prime is 810144220637. The next prime is 810144220667. The reversal of 810144220663 is 366022441018.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 810144220663 - 2¹⁷ = 810144089591 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (810144220667) 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, 405072110331 + 405072110332.

It is an arithmetic number, because the mean of its divisors is an integer number (405072110332).

Almost surely, 2^810144220663 is an apocalyptic number.

810144220663 is a deficient number, since it is larger than the sum of its proper divisors (1).

810144220663 is an equidigital number, since it uses as much as digits as its factorization.

810144220663 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 55296, while the sum is 37.

The spelling of 810144220663 in words is "eight hundred ten billion, one hundred forty-four million, two hundred twenty thousand, six hundred sixty-three".