12984591055 has 4 divisors (see below), whose sum is σ = 15581509272. Its totient is φ = 10387672840.

The previous prime is 12984591047. The next prime is 12984591071. The reversal of 12984591055 is 55019548921.

12984591055 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 12984591055 - 2³ = 12984591047 is a prime.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 1298459101 + ... + 1298459110.

It is an arithmetic number, because the mean of its divisors is an integer number (3895377318).

Almost surely, 2^12984591055 is an apocalyptic number.

12984591055 is a deficient number, since it is larger than the sum of its proper divisors (2596918217).

12984591055 is an equidigital number, since it uses as much as digits as its factorization.

12984591055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2596918216.

The product of its (nonzero) digits is 648000, while the sum is 49.

It can be divided in two parts, 129845 and 91055, that added together give a square (220900 = 470²).

The spelling of 12984591055 in words is "twelve billion, nine hundred eighty-four million, five hundred ninety-one thousand, fifty-five".