63221715287 has 2 divisors, whose sum is σ = 63221715288. Its totient is φ = 63221715286.

The previous prime is 63221715269. The next prime is 63221715311. The reversal of 63221715287 is 78251712236.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 63221715287 - 2¹⁰ = 63221714263 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (63221715247) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31610857643 + 31610857644.

It is an arithmetic number, because the mean of its divisors is an integer number (31610857644).

Almost surely, 2^63221715287 is an apocalyptic number.

63221715287 is a deficient number, since it is larger than the sum of its proper divisors (1).

63221715287 is an equidigital number, since it uses as much as digits as its factorization.

63221715287 is an evil number, because the sum of its binary digits is even.

The product of its digits is 282240, while the sum is 44.

The spelling of 63221715287 in words is "sixty-three billion, two hundred twenty-one million, seven hundred fifteen thousand, two hundred eighty-seven".