11665619323 has 2 divisors, whose sum is σ = 11665619324. Its totient is φ = 11665619322.

The previous prime is 11665619309. The next prime is 11665619347. The reversal of 11665619323 is 32391656611.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11665619323 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11665619323.

It is not a weakly prime, because it can be changed into another prime (11665619363) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5832809661 + 5832809662.

It is an arithmetic number, because the mean of its divisors is an integer number (5832809662).

Almost surely, 2^11665619323 is an apocalyptic number.

11665619323 is a deficient number, since it is larger than the sum of its proper divisors (1).

11665619323 is an equidigital number, since it uses as much as digits as its factorization.

11665619323 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 174960, while the sum is 43.

The spelling of 11665619323 in words is "eleven billion, six hundred sixty-five million, six hundred nineteen thousand, three hundred twenty-three".