8481248021 has 2 divisors, whose sum is σ = 8481248022. Its totient is φ = 8481248020.

The previous prime is 8481247993. The next prime is 8481248051. The reversal of 8481248021 is 1208421848.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7519317796 + 961930225 = 86714^2 + 31015^2 .

It is a cyclic number.

It is not a de Polignac number, because 8481248021 - 2²⁶ = 8414139157 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8481248051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4240624010 + 4240624011.

It is an arithmetic number, because the mean of its divisors is an integer number (4240624011).

Almost surely, 2^8481248021 is an apocalyptic number.

It is an amenable number.

8481248021 is a deficient number, since it is larger than the sum of its proper divisors (1).

8481248021 is an equidigital number, since it uses as much as digits as its factorization.

8481248021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 32768, while the sum is 38.

The square root of 8481248021 is about 92093.6915374772. The cubic root of 8481248021 is about 2039.3256791050.

Adding to 8481248021 its reverse (1208421848), we get a palindrome (9689669869).

The spelling of 8481248021 in words is "eight billion, four hundred eighty-one million, two hundred forty-eight thousand, twenty-one".