12663542003 has 4 divisors (see below), whose sum is σ = 14472619440. Its totient is φ = 10854464568.

The previous prime is 12663541987. The next prime is 12663542053. The reversal of 12663542003 is 30024536621.

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 12663542003 - 2⁴ = 12663541987 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12663542053) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 904538708 + ... + 904538721.

It is an arithmetic number, because the mean of its divisors is an integer number (3618154860).

Almost surely, 2^12663542003 is an apocalyptic number.

12663542003 is a deficient number, since it is larger than the sum of its proper divisors (1809077437).

12663542003 is an equidigital number, since it uses as much as digits as its factorization.

12663542003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1809077436.

The product of its (nonzero) digits is 25920, while the sum is 32.

The spelling of 12663542003 in words is "twelve billion, six hundred sixty-three million, five hundred forty-two thousand, three".