12004066556563 has 4 divisors (see below), whose sum is σ = 12004073699760. Its totient is φ = 12004059413368.

The previous prime is 12004066556539. The next prime is 12004066556621. The reversal of 12004066556563 is 36565566040021.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 12004066556563 - 2²⁵ = 12004033002131 is a prime.

It is a super-2 number, since 2×12004066556563² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12004066556063) 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, 484818 + ... + 4923736.

It is an arithmetic number, because the mean of its divisors is an integer number (3001018424940).

Almost surely, 2^{12004066556563} is an apocalyptic number.

12004066556563 is a deficient number, since it is larger than the sum of its proper divisors (7143197).

12004066556563 is an equidigital number, since it uses as much as digits as its factorization.

12004066556563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7143196.

The product of its (nonzero) digits is 3888000, while the sum is 49.

The spelling of 12004066556563 in words is "twelve trillion, four billion, sixty-six million, five hundred fifty-six thousand, five hundred sixty-three".