11368321505 has 4 divisors (see below), whose sum is σ = 13641985812. Its totient is φ = 9094657200.

The previous prime is 11368321501. The next prime is 11368321537. The reversal of 11368321505 is 50512386311.

11368321505 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 4662021841 + 6706299664 = 68279^2 + 81892^2 .

It is not a de Polignac number, because 11368321505 - 2² = 11368321501 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11368321501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1136832146 + ... + 1136832155.

It is an arithmetic number, because the mean of its divisors is an integer number (3410496453).

Almost surely, 2^11368321505 is an apocalyptic number.

It is an amenable number.

11368321505 is a deficient number, since it is larger than the sum of its proper divisors (2273664307).

11368321505 is an equidigital number, since it uses as much as digits as its factorization.

11368321505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2273664306.

The product of its (nonzero) digits is 21600, while the sum is 35.

The spelling of 11368321505 in words is "eleven billion, three hundred sixty-eight million, three hundred twenty-one thousand, five hundred five".