63648803873 has 2 divisors, whose sum is σ = 63648803874. Its totient is φ = 63648803872.

The previous prime is 63648803861. The next prime is 63648804019. The reversal of 63648803873 is 37830884636.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 63512568289 + 136235584 = 252017^2 + 11672^2 .

It is a cyclic number.

It is not a de Polignac number, because 63648803873 - 2⁴ = 63648803857 is a prime.

It is not a weakly prime, because it can be changed into another prime (63648103873) 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, 31824401936 + 31824401937.

It is an arithmetic number, because the mean of its divisors is an integer number (31824401937).

Almost surely, 2^63648803873 is an apocalyptic number.

It is an amenable number.

63648803873 is a deficient number, since it is larger than the sum of its proper divisors (1).

63648803873 is an equidigital number, since it uses as much as digits as its factorization.

63648803873 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13934592, while the sum is 56.

The spelling of 63648803873 in words is "sixty-three billion, six hundred forty-eight million, eight hundred three thousand, eight hundred seventy-three".