111543345111 has 32 divisors (see below), whose sum is σ = 173874682368. Its totient is φ = 62915149440.

The previous prime is 111543345107. The next prime is 111543345143.

111543345111 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 111543345111 - 2² = 111543345107 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111543345191) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1957876 + ... + 2014041.

It is an arithmetic number, because the mean of its divisors is an integer number (5433583824).

Almost surely, 2^111543345111 is an apocalyptic number.

111543345111 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

111543345111 is a deficient number, since it is larger than the sum of its proper divisors (62331337257).

111543345111 is a wasteful number, since it uses less digits than its factorization.

111543345111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3971991.

The product of its digits is 3600, while the sum is 30.

It can be divided in two parts, 111543 and 345111, that added together give a palindrome (456654).

The spelling of 111543345111 in words is "one hundred eleven billion, five hundred forty-three million, three hundred forty-five thousand, one hundred eleven".