111577775111 has 4 divisors (see below), whose sum is σ = 121721209224. Its totient is φ = 101434341000.

The previous prime is 111577775083. The next prime is 111577775131.

111577775111 is nontrivially palindromic in base 10.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-111577775111 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 (111577775131) 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, 5071717040 + ... + 5071717061.

It is an arithmetic number, because the mean of its divisors is an integer number (30430302306).

Almost surely, 2^111577775111 is an apocalyptic number.

111577775111 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

111577775111 is a deficient number, since it is larger than the sum of its proper divisors (10143434113).

111577775111 is a wasteful number, since it uses less digits than its factorization.

111577775111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10143434112.

The product of its digits is 60025, while the sum is 44.

It can be divided in two parts, 111577 and 775111, that added together give a palindrome (886688).

The spelling of 111577775111 in words is "one hundred eleven billion, five hundred seventy-seven million, seven hundred seventy-five thousand, one hundred eleven".