12555544573 has 16 divisors (see below), whose sum is σ = 14893796736. Its totient is φ = 10433816640.

The previous prime is 12555544571. The next prime is 12555544579. The reversal of 12555544573 is 37544555521.

It is not a de Polignac number, because 12555544573 - 2¹ = 12555544571 is a prime.

It is a super-3 number, since 3×12555544573³ (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 (12555544571) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 411490 + ... + 440947.

It is an arithmetic number, because the mean of its divisors is an integer number (930862296).

Almost surely, 2^12555544573 is an apocalyptic number.

12555544573 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

12555544573 is a deficient number, since it is larger than the sum of its proper divisors (2338252163).

12555544573 is a wasteful number, since it uses less digits than its factorization.

12555544573 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 852564.

The product of its digits is 2100000, while the sum is 46.

The spelling of 12555544573 in words is "twelve billion, five hundred fifty-five million, five hundred forty-four thousand, five hundred seventy-three".