11181288293869 has 2 divisors, whose sum is σ = 11181288293870. Its totient is φ = 11181288293868.

The previous prime is 11181288293779. The next prime is 11181288293899. The reversal of 11181288293869 is 96839288218111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11166377441769 + 14910852100 = 3341613^2 + 122110^2 .

It is a cyclic number.

It is not a de Polignac number, because 11181288293869 - 2¹⁹ = 11181287769581 is a prime.

It is a super-2 number, since 2×11181288293869² (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 (11181288293899) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5590644146934 + 5590644146935.

It is an arithmetic number, because the mean of its divisors is an integer number (5590644146935).

Almost surely, 2^{11181288293869} is an apocalyptic number.

It is an amenable number.

11181288293869 is a deficient number, since it is larger than the sum of its proper divisors (1).

11181288293869 is an equidigital number, since it uses as much as digits as its factorization.

11181288293869 is an evil number, because the sum of its binary digits is even.

The product of its digits is 23887872, while the sum is 67.

The spelling of 11181288293869 in words is "eleven trillion, one hundred eighty-one billion, two hundred eighty-eight million, two hundred ninety-three thousand, eight hundred sixty-nine".