12004115543 has 16 divisors (see below), whose sum is σ = 13847851776. Its totient is φ = 10192694400.

The previous prime is 12004115503. The next prime is 12004115581. The reversal of 12004115543 is 34551140021.

It is not a de Polignac number, because 12004115543 - 2¹⁶ = 12004050007 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 (12004115503) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2252480 + ... + 2257802.

It is an arithmetic number, because the mean of its divisors is an integer number (865490736).

Almost surely, 2^12004115543 is an apocalyptic number.

12004115543 is a deficient number, since it is larger than the sum of its proper divisors (1843736233).

12004115543 is a wasteful number, since it uses less digits than its factorization.

12004115543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8294.

The product of its (nonzero) digits is 2400, while the sum is 26.

Adding to 12004115543 its reverse (34551140021), we get a palindrome (46555255564).

The spelling of 12004115543 in words is "twelve billion, four million, one hundred fifteen thousand, five hundred forty-three".