11148228195781 has 2 divisors, whose sum is σ = 11148228195782. Its totient is φ = 11148228195780.

The previous prime is 11148228195761. The next prime is 11148228195827. The reversal of 11148228195781 is 18759182284111.

It is a happy number.

11148228195781 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10564775122500 + 583453073281 = 3250350^2 + 763841^2 .

It is an emirp because it is prime and its reverse (18759182284111) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11148228195781 - 2³¹ = 11146080712133 is a prime.

It is a super-2 number, since 2×11148228195781² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11148228195761) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5574114097890 + 5574114097891.

It is an arithmetic number, because the mean of its divisors is an integer number (5574114097891).

Almost surely, 2^{11148228195781} is an apocalyptic number.

It is an amenable number.

11148228195781 is a deficient number, since it is larger than the sum of its proper divisors (1).

11148228195781 is an equidigital number, since it uses as much as digits as its factorization.

11148228195781 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2580480, while the sum is 58.

The spelling of 11148228195781 in words is "eleven trillion, one hundred forty-eight billion, two hundred twenty-eight million, one hundred ninety-five thousand, seven hundred eighty-one".