12481430881 has 4 divisors (see below), whose sum is σ = 12686044564. Its totient is φ = 12276817200.

The previous prime is 12481430867. The next prime is 12481430891. The reversal of 12481430881 is 18803418421.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 18803418421 = 61 ⋅308252761.

It can be written as a sum of positive squares in 2 ways, for example, as 4588707600 + 7892723281 = 67740^2 + 88841^2 .

It is a cyclic number.

It is not a de Polignac number, because 12481430881 - 2³³ = 3891496289 is a prime.

It is a super-3 number, since 3×12481430881³ (a number of 31 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12481430891) 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 in 3 ways as a sum of consecutive naturals, for example, 102306750 + ... + 102306871.

It is an arithmetic number, because the mean of its divisors is an integer number (3171511141).

Almost surely, 2^12481430881 is an apocalyptic number.

It is an amenable number.

12481430881 is a deficient number, since it is larger than the sum of its proper divisors (204613683).

12481430881 is an equidigital number, since it uses as much as digits as its factorization.

12481430881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 204613682.

The product of its (nonzero) digits is 49152, while the sum is 40.

The spelling of 12481430881 in words is "twelve billion, four hundred eighty-one million, four hundred thirty thousand, eight hundred eighty-one".