111111774511111 has 24 divisors (see below), whose sum is σ = 126124885740672. Its totient is φ = 97710386769600.

The previous prime is 111111774511063. The next prime is 111111774511117. The reversal of 111111774511111 is 111115477111111.

It is not a de Polignac number, because 111111774511111 - 2⁹ = 111111774510599 is a prime.

It is a super-3 number, since 3×111111774511111³ (a number of 43 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 an unprimeable number, because it can be changed into a prime (111111774511117) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2402625 + ... + 15099541.

It is an arithmetic number, because the mean of its divisors is an integer number (5255203572528).

Almost surely, 2^{111111774511111} is an apocalyptic number.

111111774511111 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

111111774511111 is a deficient number, since it is larger than the sum of its proper divisors (15013111229561).

111111774511111 is a wasteful number, since it uses less digits than its factorization.

111111774511111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12699303 (or 12699292 counting only the distinct ones).

The product of its digits is 980, while the sum is 34.

The spelling of 111111774511111 in words is "one hundred eleven trillion, one hundred eleven billion, seven hundred seventy-four million, five hundred eleven thousand, one hundred eleven".