12454521481 has 2 divisors, whose sum is σ = 12454521482. Its totient is φ = 12454521480.

The previous prime is 12454521433. The next prime is 12454521517. The reversal of 12454521481 is 18412545421.

12454521481 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7415793225 + 5038728256 = 86115^2 + 70984^2 .

It is a cyclic number.

It is not a de Polignac number, because 12454521481 - 2¹⁵ = 12454488713 is a prime.

It is a super-2 number, since 2×12454521481² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 12454521481.

It is not a weakly prime, because it can be changed into another prime (12454525481) 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, 6227260740 + 6227260741.

It is an arithmetic number, because the mean of its divisors is an integer number (6227260741).

Almost surely, 2^12454521481 is an apocalyptic number.

It is an amenable number.

12454521481 is a deficient number, since it is larger than the sum of its proper divisors (1).

12454521481 is an equidigital number, since it uses as much as digits as its factorization.

12454521481 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 51200, while the sum is 37.

The spelling of 12454521481 in words is "twelve billion, four hundred fifty-four million, five hundred twenty-one thousand, four hundred eighty-one".