12781340298 has 32 divisors (see below), whose sum is σ = 28415392320. Its totient is φ = 4258584720.

The previous prime is 12781340293. The next prime is 12781340311. The reversal of 12781340298 is 89204318721.

It is a happy number.

12781340298 is a `hidden beast` number, since 12 + 7 + 8 + 1 + 340 + 298 = 666.

12781340298 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (12781340293) 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 15 ways as a sum of consecutive naturals, for example, 75861 + ... + 176967.

It is an arithmetic number, because the mean of its divisors is an integer number (887981010).

Almost surely, 2^12781340298 is an apocalyptic number.

12781340298 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

12781340298 is an abundant number, since it is smaller than the sum of its proper divisors (15634052022).

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

12781340298 is a wasteful number, since it uses less digits than its factorization.

12781340298 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103459 (or 103453 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 45.

The spelling of 12781340298 in words is "twelve billion, seven hundred eighty-one million, three hundred forty thousand, two hundred ninety-eight".