12481316365919 has 4 divisors (see below), whose sum is σ = 13023982294896. Its totient is φ = 11938650436944.

The previous prime is 12481316365891. The next prime is 12481316366021. The reversal of 12481316365919 is 91956361318421.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 12481316365919 - 2⁸ = 12481316365663 is a prime.

It is a super-2 number, since 2×12481316365919² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12481316365519) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 271332964454 + ... + 271332964499.

It is an arithmetic number, because the mean of its divisors is an integer number (3255995573724).

Almost surely, 2^{12481316365919} is an apocalyptic number.

12481316365919 is a deficient number, since it is larger than the sum of its proper divisors (542665928977).

12481316365919 is an equidigital number, since it uses as much as digits as its factorization.

12481316365919 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 542665928976.

The product of its digits is 8398080, while the sum is 59.

The spelling of 12481316365919 in words is "twelve trillion, four hundred eighty-one billion, three hundred sixteen million, three hundred sixty-five thousand, nine hundred nineteen".