648122068663 has 2 divisors, whose sum is σ = 648122068664. Its totient is φ = 648122068662.

The previous prime is 648122068597. The next prime is 648122068687. The reversal of 648122068663 is 366860221846.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 648122068663 - 2¹⁷ = 648121937591 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 648122068663.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (648122068063) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 324061034331 + 324061034332.

It is an arithmetic number, because the mean of its divisors is an integer number (324061034332).

Almost surely, 2^648122068663 is an apocalyptic number.

648122068663 is a deficient number, since it is larger than the sum of its proper divisors (1).

648122068663 is an equidigital number, since it uses as much as digits as its factorization.

648122068663 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3981312, while the sum is 52.

The spelling of 648122068663 in words is "six hundred forty-eight billion, one hundred twenty-two million, sixty-eight thousand, six hundred sixty-three".