12554243506 has 16 divisors (see below), whose sum is σ = 21522998016. Its totient is φ = 5380030656.

The previous prime is 12554243503. The next prime is 12554243509. The reversal of 12554243506 is 60534245521.

12554243506 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (12554243503) and next prime (12554243509).

It is not an unprimeable number, because it can be changed into a prime (12554243503) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 395290 + ... + 425866.

It is an arithmetic number, because the mean of its divisors is an integer number (1345187376).

Almost surely, 2^12554243506 is an apocalyptic number.

12554243506 is a deficient number, since it is larger than the sum of its proper divisors (8968754510).

12554243506 is a wasteful number, since it uses less digits than its factorization.

12554243506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59913.

The product of its (nonzero) digits is 144000, while the sum is 37.

The spelling of 12554243506 in words is "twelve billion, five hundred fifty-four million, two hundred forty-three thousand, five hundred six".