12340866563 has 16 divisors (see below), whose sum is σ = 12708188160. Its totient is φ = 11978344800.

The previous prime is 12340866557. The next prime is 12340866569. The reversal of 12340866563 is 36566804321.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (12340866557) and next prime (12340866569).

It is not a de Polignac number, because 12340866563 - 2⁴ = 12340866547 is a prime.

It is a super-3 number, since 3×12340866563³ (a number of 31 digits) contains 333 as substring.

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12340866569) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2914658 + ... + 2918888.

It is an arithmetic number, because the mean of its divisors is an integer number (794261760).

Almost surely, 2^12340866563 is an apocalyptic number.

12340866563 is a deficient number, since it is larger than the sum of its proper divisors (367321597).

12340866563 is a wasteful number, since it uses less digits than its factorization.

12340866563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4778.

The product of its (nonzero) digits is 622080, while the sum is 44.

The spelling of 12340866563 in words is "twelve billion, three hundred forty million, eight hundred sixty-six thousand, five hundred sixty-three".