12546554506 has 16 divisors (see below), whose sum is σ = 20975664960. Its totient is φ = 5593510080.

The previous prime is 12546554483. The next prime is 12546554507. The reversal of 12546554506 is 60545564521.

It is not an unprimeable number, because it can be changed into a prime (12546554507) 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 7 ways as a sum of consecutive naturals, for example, 9710310 + ... + 9711601.

It is an arithmetic number, because the mean of its divisors is an integer number (1310979060).

Almost surely, 2^12546554506 is an apocalyptic number.

12546554506 is a deficient number, since it is larger than the sum of its proper divisors (8429110454).

12546554506 is a wasteful number, since it uses less digits than its factorization.

12546554506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19421949.

The product of its (nonzero) digits is 720000, while the sum is 43.

It can be divided in two parts, 125465 and 54506, that added together give a palindrome (179971).

The spelling of 12546554506 in words is "twelve billion, five hundred forty-six million, five hundred fifty-four thousand, five hundred six".