12403073643 has 4 divisors (see below), whose sum is σ = 16537431528. Its totient is φ = 8268715760.

The previous prime is 12403073521. The next prime is 12403073651. The reversal of 12403073643 is 34637030421.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12403073643 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12403073693) 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, 2067178938 + ... + 2067178943.

It is an arithmetic number, because the mean of its divisors is an integer number (4134357882).

Almost surely, 2^12403073643 is an apocalyptic number.

12403073643 is a deficient number, since it is larger than the sum of its proper divisors (4134357885).

12403073643 is an equidigital number, since it uses as much as digits as its factorization.

12403073643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4134357884.

The product of its (nonzero) digits is 36288, while the sum is 33.

The spelling of 12403073643 in words is "twelve billion, four hundred three million, seventy-three thousand, six hundred forty-three".