13603611513 has 4 divisors (see below), whose sum is σ = 18138148688. Its totient is φ = 9069074340.

The previous prime is 13603611503. The next prime is 13603611563. The reversal of 13603611513 is 31511630631.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 13603611513 - 2¹⁷ = 13603480441 is a prime.

It is a super-2 number, since 2×13603611513² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (13603611503) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2267268583 + ... + 2267268588.

It is an arithmetic number, because the mean of its divisors is an integer number (4534537172).

Almost surely, 2^13603611513 is an apocalyptic number.

It is an amenable number.

13603611513 is a deficient number, since it is larger than the sum of its proper divisors (4534537175).

13603611513 is an equidigital number, since it uses as much as digits as its factorization.

13603611513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4534537174.

The product of its (nonzero) digits is 4860, while the sum is 30.

The spelling of 13603611513 in words is "thirteen billion, six hundred three million, six hundred eleven thousand, five hundred thirteen".