11543671111 has 4 divisors (see below), whose sum is σ = 13192766992. Its totient is φ = 9894575232.

The previous prime is 11543671099. The next prime is 11543671151. The reversal of 11543671111 is 11117634511.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 11543671111 - 2¹¹ = 11543669063 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11543671151) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 824547930 + ... + 824547943.

It is an arithmetic number, because the mean of its divisors is an integer number (3298191748).

Almost surely, 2^11543671111 is an apocalyptic number.

11543671111 is a deficient number, since it is larger than the sum of its proper divisors (1649095881).

11543671111 is an equidigital number, since it uses as much as digits as its factorization.

11543671111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1649095880.

The product of its digits is 2520, while the sum is 31.

The spelling of 11543671111 in words is "eleven billion, five hundred forty-three million, six hundred seventy-one thousand, one hundred eleven".