11565942343 has 4 divisors (see below), whose sum is σ = 11685178960. Its totient is φ = 11446705728.

The previous prime is 11565942341. The next prime is 11565942361. The reversal of 11565942343 is 34324956511.

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

It is a cyclic number.

It is not a de Polignac number, because 11565942343 - 2¹ = 11565942341 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11565942343.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11565942341) 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, 59618163 + ... + 59618356.

It is an arithmetic number, because the mean of its divisors is an integer number (2921294740).

Almost surely, 2^11565942343 is an apocalyptic number.

11565942343 is a deficient number, since it is larger than the sum of its proper divisors (119236617).

11565942343 is an equidigital number, since it uses as much as digits as its factorization.

11565942343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 119236616.

The product of its digits is 388800, while the sum is 43.

The spelling of 11565942343 in words is "eleven billion, five hundred sixty-five million, nine hundred forty-two thousand, three hundred forty-three".