13505544545 has 8 divisors (see below), whose sum is σ = 16211200680. Its totient is φ = 10801404160.

The previous prime is 13505544523. The next prime is 13505544551. The reversal of 13505544545 is 54544550531.

It can be written as a sum of positive squares in 4 ways, for example, as 2780663824 + 10724880721 = 52732^2 + 103561^2 .

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

It is not a de Polignac number, because 13505544545 - 2³² = 9210577249 is a prime.

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, 359240 + ... + 395049.

It is an arithmetic number, because the mean of its divisors is an integer number (2026400085).

Almost surely, 2^13505544545 is an apocalyptic number.

It is an amenable number.

13505544545 is a deficient number, since it is larger than the sum of its proper divisors (2705656135).

13505544545 is an equidigital number, since it uses as much as digits as its factorization.

13505544545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 757875.

The product of its (nonzero) digits is 600000, while the sum is 41.

The spelling of 13505544545 in words is "thirteen billion, five hundred five million, five hundred forty-four thousand, five hundred forty-five".