13281784959329 has 4 divisors (see below), whose sum is σ = 13282007200560. Its totient is φ = 13281562718100.

The previous prime is 13281784959301. The next prime is 13281784959337. The reversal of 13281784959329 is 92395948718231.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13281784959329 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13281784659329) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 111030947 + ... + 111150504.

It is an arithmetic number, because the mean of its divisors is an integer number (3320501800140).

Almost surely, 2^{13281784959329} is an apocalyptic number.

It is an amenable number.

13281784959329 is a deficient number, since it is larger than the sum of its proper divisors (222241231).

13281784959329 is an equidigital number, since it uses as much as digits as its factorization.

13281784959329 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 222241230.

The product of its digits is 235146240, while the sum is 71.

The spelling of 13281784959329 in words is "thirteen trillion, two hundred eighty-one billion, seven hundred eighty-four million, nine hundred fifty-nine thousand, three hundred twenty-nine".