663016362881 has 2 divisors, whose sum is σ = 663016362882. Its totient is φ = 663016362880.

The previous prime is 663016362859. The next prime is 663016362889. The reversal of 663016362881 is 188263610366.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 572405730625 + 90610632256 = 756575^2 + 301016^2 .

It is a cyclic number.

It is not a de Polignac number, because 663016362881 - 2³⁴ = 645836493697 is a prime.

It is a super-2 number, since 2×663016362881² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (663016362889) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 331508181440 + 331508181441.

It is an arithmetic number, because the mean of its divisors is an integer number (331508181441).

Almost surely, 2^663016362881 is an apocalyptic number.

It is an amenable number.

663016362881 is a deficient number, since it is larger than the sum of its proper divisors (1).

663016362881 is an equidigital number, since it uses as much as digits as its factorization.

663016362881 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1492992, while the sum is 50.

The spelling of 663016362881 in words is "six hundred sixty-three billion, sixteen million, three hundred sixty-two thousand, eight hundred eighty-one".