12456664603 has 4 divisors (see below), whose sum is σ = 12457118520. Its totient is φ = 12456210688.

The previous prime is 12456664579. The next prime is 12456664639. The reversal of 12456664603 is 30646665421.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 30646665421 = 86011 ⋅356311.

It is a cyclic number.

It is not a de Polignac number, because 12456664603 - 2⁹ = 12456664091 is a prime.

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 12456664603.

It is not an unprimeable number, because it can be changed into a prime (12456664673) 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, 182950 + ... + 241627.

It is an arithmetic number, because the mean of its divisors is an integer number (3114279630).

Almost surely, 2^12456664603 is an apocalyptic number.

12456664603 is a deficient number, since it is larger than the sum of its proper divisors (453917).

12456664603 is an equidigital number, since it uses as much as digits as its factorization.

12456664603 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 453916.

The product of its (nonzero) digits is 622080, while the sum is 43.

The spelling of 12456664603 in words is "twelve billion, four hundred fifty-six million, six hundred sixty-four thousand, six hundred three".