11501868549823 has 2 divisors, whose sum is σ = 11501868549824. Its totient is φ = 11501868549822.

The previous prime is 11501868549763. The next prime is 11501868549833. The reversal of 11501868549823 is 32894586810511.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (32894586810511) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11501868549823 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11501868549833) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5750934274911 + 5750934274912.

It is an arithmetic number, because the mean of its divisors is an integer number (5750934274912).

Almost surely, 2^{11501868549823} is an apocalyptic number.

11501868549823 is a deficient number, since it is larger than the sum of its proper divisors (1).

11501868549823 is an equidigital number, since it uses as much as digits as its factorization.

11501868549823 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16588800, while the sum is 61.

The spelling of 11501868549823 in words is "eleven trillion, five hundred one billion, eight hundred sixty-eight million, five hundred forty-nine thousand, eight hundred twenty-three".