63221350447 has 2 divisors, whose sum is σ = 63221350448. Its totient is φ = 63221350446.

The previous prime is 63221350397. The next prime is 63221350453. The reversal of 63221350447 is 74405312236.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-63221350447 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (63221351447) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31610675223 + 31610675224.

It is an arithmetic number, because the mean of its divisors is an integer number (31610675224).

Almost surely, 2^63221350447 is an apocalyptic number.

63221350447 is a deficient number, since it is larger than the sum of its proper divisors (1).

63221350447 is an equidigital number, since it uses as much as digits as its factorization.

63221350447 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 120960, while the sum is 37.

The spelling of 63221350447 in words is "sixty-three billion, two hundred twenty-one million, three hundred fifty thousand, four hundred forty-seven".