11565711223 has 8 divisors (see below), whose sum is σ = 12669495696. Its totient is φ = 10470652800.

The previous prime is 11565711173. The next prime is 11565711233. The reversal of 11565711223 is 32211756511.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 11565711223 - 2¹⁷ = 11565580151 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11565711233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2178736 + ... + 2184037.

It is an arithmetic number, because the mean of its divisors is an integer number (1583686962).

Almost surely, 2^11565711223 is an apocalyptic number.

11565711223 is a deficient number, since it is larger than the sum of its proper divisors (1103784473).

11565711223 is a wasteful number, since it uses less digits than its factorization.

11565711223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4363025.

The product of its digits is 12600, while the sum is 34.

The spelling of 11565711223 in words is "eleven billion, five hundred sixty-five million, seven hundred eleven thousand, two hundred twenty-three".