11164320605 has 16 divisors (see below), whose sum is σ = 13459613184. Its totient is φ = 8889903360.

The previous prime is 11164320593. The next prime is 11164320641. The reversal of 11164320605 is 50602346111.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-11164320605 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 15 ways as a sum of consecutive naturals, for example, 1653797 + ... + 1660533.

It is an arithmetic number, because the mean of its divisors is an integer number (841225824).

Almost surely, 2^11164320605 is an apocalyptic number.

It is an amenable number.

11164320605 is a deficient number, since it is larger than the sum of its proper divisors (2295292579).

11164320605 is a wasteful number, since it uses less digits than its factorization.

11164320605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8236.

The product of its (nonzero) digits is 4320, while the sum is 29.

Adding to 11164320605 its reverse (50602346111), we get a palindrome (61766666716).

The spelling of 11164320605 in words is "eleven billion, one hundred sixty-four million, three hundred twenty thousand, six hundred five".