13505550505 has 8 divisors (see below), whose sum is σ = 16241818824. Its totient is φ = 10781001600.

The previous prime is 13505550479. The next prime is 13505550521. The reversal of 13505550505 is 50505550531.

It can be written as a sum of positive squares in 4 ways, for example, as 28430224 + 13477120281 = 5332^2 + 116091^2 .

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

It is a de Polignac number, because none of the positive numbers 2^k-13505550505 is a prime.

It is a Duffinian 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, 2927316 + ... + 2931925.

It is an arithmetic number, because the mean of its divisors is an integer number (2030227353).

Almost surely, 2^13505550505 is an apocalyptic number.

It is an amenable number.

13505550505 is a deficient number, since it is larger than the sum of its proper divisors (2736268319).

13505550505 is an equidigital number, since it uses as much as digits as its factorization.

13505550505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5859707.

The product of its (nonzero) digits is 46875, while the sum is 34.

The spelling of 13505550505 in words is "thirteen billion, five hundred five million, five hundred fifty thousand, five hundred five".