8015812481 has 2 divisors, whose sum is σ = 8015812482. Its totient is φ = 8015812480.

The previous prime is 8015812439. The next prime is 8015812537. The reversal of 8015812481 is 1842185108.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7945939600 + 69872881 = 89140^2 + 8359^2 .

It is a cyclic number.

It is not a de Polignac number, because 8015812481 - 2⁶ = 8015812417 is a prime.

It is a super-2 number, since 2×8015812481² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (8015832481) 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, 4007906240 + 4007906241.

It is an arithmetic number, because the mean of its divisors is an integer number (4007906241).

Almost surely, 2^8015812481 is an apocalyptic number.

It is an amenable number.

8015812481 is a deficient number, since it is larger than the sum of its proper divisors (1).

8015812481 is an equidigital number, since it uses as much as digits as its factorization.

8015812481 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20480, while the sum is 38.

The square root of 8015812481 is about 89531.0699198887. The cubic root of 8015812481 is about 2001.3168395265.

Adding to 8015812481 its reverse (1842185108), we get a palindrome (9857997589).

The spelling of 8015812481 in words is "eight billion, fifteen million, eight hundred twelve thousand, four hundred eighty-one".