12566003541 has 32 divisors (see below), whose sum is σ = 20653006080. Its totient is φ = 6617977344.

The previous prime is 12566003491. The next prime is 12566003557. The reversal of 12566003541 is 14530066521.

It is a de Polignac number, because none of the positive numbers 2^k-12566003541 is a prime.

It is a super-3 number, since 3×12566003541³ (a number of 31 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12566003561) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 143025 + ... + 213513.

It is an arithmetic number, because the mean of its divisors is an integer number (645406440).

Almost surely, 2^12566003541 is an apocalyptic number.

It is an amenable number.

12566003541 is a deficient number, since it is larger than the sum of its proper divisors (8087002539).

12566003541 is a wasteful number, since it uses less digits than its factorization.

12566003541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71165.

The product of its (nonzero) digits is 21600, while the sum is 33.

The spelling of 12566003541 in words is "twelve billion, five hundred sixty-six million, three thousand, five hundred forty-one".