13549897511329 has 4 divisors (see below), whose sum is σ = 13550826046276. Its totient is φ = 13548968976384.

The previous prime is 13549897511299. The next prime is 13549897511377. The reversal of 13549897511329 is 92311579894531.

13549897511329 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 can be written as a sum of positive squares in 2 ways, for example, as 415796701329 + 13134100810000 = 644823^2 + 3624100^2 .

It is a cyclic number.

It is not a de Polignac number, because 13549897511329 - 2⁹ = 13549897510817 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13549897518329) 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, 464245584 + ... + 464274769.

It is an arithmetic number, because the mean of its divisors is an integer number (3387706511569).

Almost surely, 2^{13549897511329} is an apocalyptic number.

It is an amenable number.

13549897511329 is a deficient number, since it is larger than the sum of its proper divisors (928534947).

13549897511329 is an equidigital number, since it uses as much as digits as its factorization.

13549897511329 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 928534946.

The product of its digits is 73483200, while the sum is 67.

The spelling of 13549897511329 in words is "thirteen trillion, five hundred forty-nine billion, eight hundred ninety-seven million, five hundred eleven thousand, three hundred twenty-nine".