12752281481 has 2 divisors, whose sum is σ = 12752281482. Its totient is φ = 12752281480.

The previous prime is 12752281463. The next prime is 12752281499. The reversal of 12752281481 is 18418225721.

12752281481 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a balanced prime because it is at equal distance from previous prime (12752281463) and next prime (12752281499).

It can be written as a sum of positive squares in only one way, i.e., 7278649225 + 5473632256 = 85315^2 + 73984^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12752281481 is a prime.

It is a super-2 number, since 2×12752281481² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (12752281411) 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, 6376140740 + 6376140741.

It is an arithmetic number, because the mean of its divisors is an integer number (6376140741).

Almost surely, 2^12752281481 is an apocalyptic number.

It is an amenable number.

12752281481 is a deficient number, since it is larger than the sum of its proper divisors (1).

12752281481 is an equidigital number, since it uses as much as digits as its factorization.

12752281481 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 71680, while the sum is 41.

The spelling of 12752281481 in words is "twelve billion, seven hundred fifty-two million, two hundred eighty-one thousand, four hundred eighty-one".