12705981863 has 8 divisors (see below), whose sum is σ = 12764466000. Its totient is φ = 12647531968.

The previous prime is 12705981803. The next prime is 12705981887. The reversal of 12705981863 is 36818950721.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12705981863 is a prime.

It is a super-2 number, since 2×12705981863² (a number of 21 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 (12705981803) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1007048 + ... + 1019586.

It is an arithmetic number, because the mean of its divisors is an integer number (1595558250).

Almost surely, 2^12705981863 is an apocalyptic number.

12705981863 is a deficient number, since it is larger than the sum of its proper divisors (58484137).

12705981863 is a wasteful number, since it uses less digits than its factorization.

12705981863 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17121.

The product of its (nonzero) digits is 725760, while the sum is 50.

The spelling of 12705981863 in words is "twelve billion, seven hundred five million, nine hundred eighty-one thousand, eight hundred sixty-three".