13449451565 has 8 divisors (see below), whose sum is σ = 17606554848. Its totient is φ = 9781419280.

The previous prime is 13449451541. The next prime is 13449451571. The reversal of 13449451565 is 56515494431.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 13449451565 - 2¹² = 13449447469 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 122267687 + ... + 122267796.

It is an arithmetic number, because the mean of its divisors is an integer number (2200819356).

Almost surely, 2^13449451565 is an apocalyptic number.

It is an amenable number.

13449451565 is a deficient number, since it is larger than the sum of its proper divisors (4157103283).

13449451565 is a wasteful number, since it uses less digits than its factorization.

13449451565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 244535499.

The product of its digits is 1296000, while the sum is 47.

The spelling of 13449451565 in words is "thirteen billion, four hundred forty-nine million, four hundred fifty-one thousand, five hundred sixty-five".