11603380111 has 4 divisors (see below), whose sum is σ = 11886389424. Its totient is φ = 11320370800.

The previous prime is 11603380109. The next prime is 11603380121. The reversal of 11603380111 is 11108330611.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 11108330611 = 7 ⋅1586904373.

It is a cyclic number.

It is not a de Polignac number, because 11603380111 - 2¹ = 11603380109 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11603380121) 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, 141504595 + ... + 141504676.

It is an arithmetic number, because the mean of its divisors is an integer number (2971597356).

Almost surely, 2^11603380111 is an apocalyptic number.

11603380111 is a deficient number, since it is larger than the sum of its proper divisors (283009313).

11603380111 is an equidigital number, since it uses as much as digits as its factorization.

11603380111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 283009312.

The product of its (nonzero) digits is 432, while the sum is 25.

The spelling of 11603380111 in words is "eleven billion, six hundred three million, three hundred eighty thousand, one hundred eleven".