13543881811111 has 2 divisors, whose sum is σ = 13543881811112. Its totient is φ = 13543881811110.

The previous prime is 13543881811069. The next prime is 13543881811129. The reversal of 13543881811111 is 11111818834531.

It is a strong prime.

It is an emirp because it is prime and its reverse (11111818834531) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 13543881811111 - 2¹⁷ = 13543881680039 is a prime.

It is a super-3 number, since 3×13543881811111³ (a number of 40 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13543881811151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6771940905555 + 6771940905556.

It is an arithmetic number, because the mean of its divisors is an integer number (6771940905556).

Almost surely, 2^{13543881811111} is an apocalyptic number.

13543881811111 is a deficient number, since it is larger than the sum of its proper divisors (1).

13543881811111 is an equidigital number, since it uses as much as digits as its factorization.

13543881811111 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 92160, while the sum is 46.

The spelling of 13543881811111 in words is "thirteen trillion, five hundred forty-three billion, eight hundred eighty-one million, eight hundred eleven thousand, one hundred eleven".