63287111861 has 2 divisors, whose sum is σ = 63287111862. Its totient is φ = 63287111860.

The previous prime is 63287111851. The next prime is 63287111863. The reversal of 63287111861 is 16811178236.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 62815396900 + 471714961 = 250630^2 + 21719^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-63287111861 is a prime.

Together with 63287111863, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (63287111863) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31643555930 + 31643555931.

It is an arithmetic number, because the mean of its divisors is an integer number (31643555931).

Almost surely, 2^63287111861 is an apocalyptic number.

It is an amenable number.

63287111861 is a deficient number, since it is larger than the sum of its proper divisors (1).

63287111861 is an equidigital number, since it uses as much as digits as its factorization.

63287111861 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 96768, while the sum is 44.

The spelling of 63287111861 in words is "sixty-three billion, two hundred eighty-seven million, one hundred eleven thousand, eight hundred sixty-one".