12047805543 has 4 divisors (see below), whose sum is σ = 16063740728. Its totient is φ = 8031870360.

The previous prime is 12047805529. The next prime is 12047805547. The reversal of 12047805543 is 34550874021.

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

It is not a de Polignac number, because 12047805543 - 2⁴ = 12047805527 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 (12047805547) 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, 2007967588 + ... + 2007967593.

It is an arithmetic number, because the mean of its divisors is an integer number (4015935182).

Almost surely, 2^12047805543 is an apocalyptic number.

12047805543 is a deficient number, since it is larger than the sum of its proper divisors (4015935185).

12047805543 is an equidigital number, since it uses as much as digits as its factorization.

12047805543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4015935184.

The product of its (nonzero) digits is 134400, while the sum is 39.

The spelling of 12047805543 in words is "twelve billion, forty-seven million, eight hundred five thousand, five hundred forty-three".