13509610003 has 4 divisors (see below), whose sum is σ = 13839112728. Its totient is φ = 13180107280.

The previous prime is 13509609979. The next prime is 13509610043. The reversal of 13509610003 is 30001690531.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 30001690531 = 3061 ⋅9801271.

It is a cyclic number.

It is not a de Polignac number, because 13509610003 - 2¹³ = 13509601811 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13509610043) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 164751301 + ... + 164751382.

It is an arithmetic number, because the mean of its divisors is an integer number (3459778182).

Almost surely, 2^13509610003 is an apocalyptic number.

13509610003 is a deficient number, since it is larger than the sum of its proper divisors (329502725).

13509610003 is an equidigital number, since it uses as much as digits as its factorization.

13509610003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 329502724.

The product of its (nonzero) digits is 2430, while the sum is 28.

The spelling of 13509610003 in words is "thirteen billion, five hundred nine million, six hundred ten thousand, three".