12481945812 has 54 divisors (see below), whose sum is σ = 36702869658. Its totient is φ = 3566269728.

The previous prime is 12481945789. The next prime is 12481945813. The reversal of 12481945812 is 21854918421.

12481945812 is a `hidden beast` number, since 1 + 2 + 481 + 94 + 5 + 81 + 2 = 666.

It can be written as a sum of positive squares in only one way, i.e., 9933311556 + 2548634256 = 99666^2 + 50484^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12481945813) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 3536203 + ... + 3539730.

Almost surely, 2^12481945812 is an apocalyptic number.

12481945812 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12481945812 is an abundant number, since it is smaller than the sum of its proper divisors (24220923846).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12481945812 is a wasteful number, since it uses less digits than its factorization.

12481945812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7075957 (or 7075945 counting only the distinct ones).

The product of its digits is 184320, while the sum is 45.

The spelling of 12481945812 in words is "twelve billion, four hundred eighty-one million, nine hundred forty-five thousand, eight hundred twelve".