63281621903 has 2 divisors, whose sum is σ = 63281621904. Its totient is φ = 63281621902.

The previous prime is 63281621801. The next prime is 63281621929. The reversal of 63281621903 is 30912618236.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 63281621903 - 2¹⁶ = 63281556367 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (63281621603) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31640810951 + 31640810952.

It is an arithmetic number, because the mean of its divisors is an integer number (31640810952).

Almost surely, 2^63281621903 is an apocalyptic number.

63281621903 is a deficient number, since it is larger than the sum of its proper divisors (1).

63281621903 is an equidigital number, since it uses as much as digits as its factorization.

63281621903 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 93312, while the sum is 41.

The spelling of 63281621903 in words is "sixty-three billion, two hundred eighty-one million, six hundred twenty-one thousand, nine hundred three".