12369617543 has 4 divisors (see below), whose sum is σ = 12414273480. Its totient is φ = 12324961608.

The previous prime is 12369617539. The next prime is 12369617581. The reversal of 12369617543 is 34571696321.

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 12369617543 - 2² = 12369617539 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12369677543) 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, 22327553 + ... + 22328106.

It is an arithmetic number, because the mean of its divisors is an integer number (3103568370).

Almost surely, 2^12369617543 is an apocalyptic number.

12369617543 is a deficient number, since it is larger than the sum of its proper divisors (44655937).

12369617543 is an equidigital number, since it uses as much as digits as its factorization.

12369617543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44655936.

The product of its digits is 816480, while the sum is 47.

The spelling of 12369617543 in words is "twelve billion, three hundred sixty-nine million, six hundred seventeen thousand, five hundred forty-three".