63323340281 has 2 divisors, whose sum is σ = 63323340282. Its totient is φ = 63323340280.

The previous prime is 63323340271. The next prime is 63323340293. The reversal of 63323340281 is 18204332336.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 50944552681 + 12378787600 = 225709^2 + 111260^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-63323340281 is a prime.

It is a super-2 number, since 2×63323340281² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (63323340271) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31661670140 + 31661670141.

It is an arithmetic number, because the mean of its divisors is an integer number (31661670141).

Almost surely, 2^63323340281 is an apocalyptic number.

It is an amenable number.

63323340281 is a deficient number, since it is larger than the sum of its proper divisors (1).

63323340281 is an equidigital number, since it uses as much as digits as its factorization.

63323340281 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 62208, while the sum is 35.

The spelling of 63323340281 in words is "sixty-three billion, three hundred twenty-three million, three hundred forty thousand, two hundred eighty-one".