11703437665 has 4 divisors (see below), whose sum is σ = 14044125204. Its totient is φ = 9362750128.

The previous prime is 11703437663. The next prime is 11703437701. The reversal of 11703437665 is 56673430711.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 56673430711 = 19139 ⋅2961149.

It can be written as a sum of positive squares in 2 ways, for example, as 6059221281 + 5644216384 = 77841^2 + 75128^2 .

It is a cyclic number.

It is not a de Polignac number, because 11703437665 - 2¹ = 11703437663 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11703437663) 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, 1170343762 + ... + 1170343771.

It is an arithmetic number, because the mean of its divisors is an integer number (3511031301).

Almost surely, 2^11703437665 is an apocalyptic number.

It is an amenable number.

11703437665 is a deficient number, since it is larger than the sum of its proper divisors (2340687539).

11703437665 is an equidigital number, since it uses as much as digits as its factorization.

11703437665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2340687538.

The product of its (nonzero) digits is 317520, while the sum is 43.

The spelling of 11703437665 in words is "eleven billion, seven hundred three million, four hundred thirty-seven thousand, six hundred sixty-five".