13505461369 has 9 divisors (see below), whose sum is σ = 13588831749. Its totient is φ = 13422601500.

The previous prime is 13505461367. The next prime is 13505461381. The reversal of 13505461369 is 96316450531.

It is a happy number.

The square root of 13505461369 is 116213.

It is a perfect power (a square), and thus also a powerful number.

It is not a de Polignac number, because 13505461369 - 2¹ = 13505461367 is a prime.

It is a super-2 number, since 2×13505461369² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13505461367) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 29169232 + ... + 29169694.

Almost surely, 2^13505461369 is an apocalyptic number.

13505461369 is the 116213-rd square number.

13505461369 is the 58107-th centered octagonal number.

It is an amenable number.

13505461369 is a deficient number, since it is larger than the sum of its proper divisors (83370380).

13505461369 is an frugal number, since it uses more digits than its factorization.

13505461369 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1428 (or 714 counting only the distinct ones).

The product of its (nonzero) digits is 291600, while the sum is 43.

The spelling of 13505461369 in words is "thirteen billion, five hundred five million, four hundred sixty-one thousand, three hundred sixty-nine".