13513063405 has 4 divisors (see below), whose sum is σ = 16215676092. Its totient is φ = 10810450720.

The previous prime is 13513063381. The next prime is 13513063423. The reversal of 13513063405 is 50436031531.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 50436031531 = 1237 ⋅40772863.

It can be written as a sum of positive squares in 2 ways, for example, as 2598246729 + 10914816676 = 50973^2 + 104474^2 .

It is not a de Polignac number, because 13513063405 - 2³³ = 4923128813 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 3 ways as a sum of consecutive naturals, for example, 1351306336 + ... + 1351306345.

It is an arithmetic number, because the mean of its divisors is an integer number (4053919023).

Almost surely, 2^13513063405 is an apocalyptic number.

It is an amenable number.

13513063405 is a deficient number, since it is larger than the sum of its proper divisors (2702612687).

13513063405 is an equidigital number, since it uses as much as digits as its factorization.

13513063405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2702612686.

The product of its (nonzero) digits is 16200, while the sum is 31.

Adding to 13513063405 its reverse (50436031531), we get a palindrome (63949094936).

The spelling of 13513063405 in words is "thirteen billion, five hundred thirteen million, sixty-three thousand, four hundred five".