12465423563 has 4 divisors (see below), whose sum is σ = 12700620288. Its totient is φ = 12230226840.

The previous prime is 12465423527. The next prime is 12465423569. The reversal of 12465423563 is 36532456421.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12465423563 - 2²⁶ = 12398314699 is a prime.

It is a super-2 number, since 2×12465423563² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12465423563.

It is not an unprimeable number, because it can be changed into a prime (12465423569) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 117598283 + ... + 117598388.

It is an arithmetic number, because the mean of its divisors is an integer number (3175155072).

Almost surely, 2^12465423563 is an apocalyptic number.

12465423563 is a deficient number, since it is larger than the sum of its proper divisors (235196725).

12465423563 is an equidigital number, since it uses as much as digits as its factorization.

12465423563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 235196724.

The product of its digits is 518400, while the sum is 41.

Adding to 12465423563 its reverse (36532456421), we get a palindrome (48997879984).

The spelling of 12465423563 in words is "twelve billion, four hundred sixty-five million, four hundred twenty-three thousand, five hundred sixty-three".