11231216818453 has 2 divisors, whose sum is σ = 11231216818454. Its totient is φ = 11231216818452.

The previous prime is 11231216818447. The next prime is 11231216818517. The reversal of 11231216818453 is 35481861213211.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8317582896484 + 2913633921969 = 2884022^2 + 1706937^2 .

It is a cyclic number.

It is not a de Polignac number, because 11231216818453 - 2⁹ = 11231216817941 is a prime.

It is a super-3 number, since 3×11231216818453³ (a number of 40 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11231216818403) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5615608409226 + 5615608409227.

It is an arithmetic number, because the mean of its divisors is an integer number (5615608409227).

Almost surely, 2^{11231216818453} is an apocalyptic number.

It is an amenable number.

11231216818453 is a deficient number, since it is larger than the sum of its proper divisors (1).

11231216818453 is an equidigital number, since it uses as much as digits as its factorization.

11231216818453 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 276480, while the sum is 46.

The spelling of 11231216818453 in words is "eleven trillion, two hundred thirty-one billion, two hundred sixteen million, eight hundred eighteen thousand, four hundred fifty-three".