11565942344 has 32 divisors (see below), whose sum is σ = 23729142240. Its totient is φ = 5241350400.

The previous prime is 11565942341. The next prime is 11565942361. The reversal of 11565942344 is 44324956511.

It is a happy number.

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is a junction number, because it is equal to n+sod(n) for n = 11565942295 and 11565942304.

It is not an unprimeable number, because it can be changed into a prime (11565942341) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 169409 + ... + 227664.

It is an arithmetic number, because the mean of its divisors is an integer number (741535695).

Almost surely, 2^11565942344 is an apocalyptic number.

It is an amenable number.

11565942344 is an abundant number, since it is smaller than the sum of its proper divisors (12163199896).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11565942344 is a wasteful number, since it uses less digits than its factorization.

11565942344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 397421 (or 397417 counting only the distinct ones).

The product of its digits is 518400, while the sum is 44.

The spelling of 11565942344 in words is "eleven billion, five hundred sixty-five million, nine hundred forty-two thousand, three hundred forty-four".