13324720655 has 4 divisors (see below), whose sum is σ = 15989664792. Its totient is φ = 10659776520.

The previous prime is 13324720603. The next prime is 13324720727. The reversal of 13324720655 is 55602742331.

13324720655 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 13324720655 - 2¹⁴ = 13324704271 is a prime.

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, 1332472061 + ... + 1332472070.

It is an arithmetic number, because the mean of its divisors is an integer number (3997416198).

Almost surely, 2^13324720655 is an apocalyptic number.

13324720655 is a deficient number, since it is larger than the sum of its proper divisors (2664944137).

13324720655 is an equidigital number, since it uses as much as digits as its factorization.

13324720655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2664944136.

The product of its (nonzero) digits is 151200, while the sum is 38.

The spelling of 13324720655 in words is "thirteen billion, three hundred twenty-four million, seven hundred twenty thousand, six hundred fifty-five".