12781340297 has 8 divisors (see below), whose sum is σ = 13944223872. Its totient is φ = 11618614000.

The previous prime is 12781340293. The next prime is 12781340311. The reversal of 12781340297 is 79204318721.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12781340297 - 2² = 12781340293 is a prime.

It is a Duffinian 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 7 ways as a sum of consecutive naturals, for example, 187547 + ... + 246447.

It is an arithmetic number, because the mean of its divisors is an integer number (1743027984).

Almost surely, 2^12781340297 is an apocalyptic number.

It is an amenable number.

12781340297 is a deficient number, since it is larger than the sum of its proper divisors (1162883575).

12781340297 is a wasteful number, since it uses less digits than its factorization.

12781340297 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78639.

The product of its (nonzero) digits is 169344, while the sum is 44.

The spelling of 12781340297 in words is "twelve billion, seven hundred eighty-one million, three hundred forty thousand, two hundred ninety-seven".