11509346103 has 16 divisors (see below), whose sum is σ = 16304732640. Its totient is φ = 7221541248.

The previous prime is 11509346071. The next prime is 11509346129. The reversal of 11509346103 is 30164390511.

It is not a de Polignac number, because 11509346103 - 2⁵ = 11509346071 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11509346183) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 375700 + ... + 405177.

It is an arithmetic number, because the mean of its divisors is an integer number (1019045790).

Almost surely, 2^11509346103 is an apocalyptic number.

11509346103 is a deficient number, since it is larger than the sum of its proper divisors (4795386537).

11509346103 is an frugal number, since it uses more digits than its factorization.

11509346103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 780931 (or 780897 counting only the distinct ones).

The product of its (nonzero) digits is 9720, while the sum is 33.

The spelling of 11509346103 in words is "eleven billion, five hundred nine million, three hundred forty-six thousand, one hundred three".