111155511049 has 4 divisors (see below), whose sum is σ = 121260557520. Its totient is φ = 101050464580.

The previous prime is 111155511043. The next prime is 111155511091. The reversal of 111155511049 is 940115551111.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 111155511049 - 2⁹ = 111155510537 is a prime.

It is a super-2 number, since 2×111155511049² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (111155511043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5052523219 + ... + 5052523240.

It is an arithmetic number, because the mean of its divisors is an integer number (30315139380).

Almost surely, 2^111155511049 is an apocalyptic number.

It is an amenable number.

111155511049 is a deficient number, since it is larger than the sum of its proper divisors (10105046471).

111155511049 is a wasteful number, since it uses less digits than its factorization.

111155511049 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10105046470.

The product of its (nonzero) digits is 4500, while the sum is 34.

The spelling of 111155511049 in words is "one hundred eleven billion, one hundred fifty-five million, five hundred eleven thousand, forty-nine".