12781861246307 has 8 divisors (see below), whose sum is σ = 12895051782480. Its totient is φ = 12668672056320.

The previous prime is 12781861246211. The next prime is 12781861246373. The reversal of 12781861246307 is 70364216818721.

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 12781861246307 - 2²⁰ = 12781860197731 is a prime.

It is a super-2 number, since 2×12781861246307² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12781861846307) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36655544 + ... + 37002602.

It is an arithmetic number, because the mean of its divisors is an integer number (1611881472810).

Almost surely, 2^{12781861246307} is an apocalyptic number.

12781861246307 is a deficient number, since it is larger than the sum of its proper divisors (113190536173).

12781861246307 is a wasteful number, since it uses less digits than its factorization.

12781861246307 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 673093.

The product of its (nonzero) digits is 5419008, while the sum is 56.

The spelling of 12781861246307 in words is "twelve trillion, seven hundred eighty-one billion, eight hundred sixty-one million, two hundred forty-six thousand, three hundred seven".