6463611111281 has 2 divisors, whose sum is σ = 6463611111282. Its totient is φ = 6463611111280.

The previous prime is 6463611111271. The next prime is 6463611111379. The reversal of 6463611111281 is 1821111163646.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6426306120256 + 37304991025 = 2535016^2 + 193145^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6463611111281 is a prime.

It is a super-2 number, since 2×6463611111281² (a number of 26 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (6463611111271) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3231805555640 + 3231805555641.

It is an arithmetic number, because the mean of its divisors is an integer number (3231805555641).

Almost surely, 2^{6463611111281} is an apocalyptic number.

It is an amenable number.

6463611111281 is a deficient number, since it is larger than the sum of its proper divisors (1).

6463611111281 is an equidigital number, since it uses as much as digits as its factorization.

6463611111281 is an evil number, because the sum of its binary digits is even.

The product of its digits is 41472, while the sum is 41.

The spelling of 6463611111281 in words is "six trillion, four hundred sixty-three billion, six hundred eleven million, one hundred eleven thousand, two hundred eighty-one".