111411091089 has 15 divisors (see below), whose sum is σ = 166433401497. Its totient is φ = 74272058028.

The previous prime is 111411091049. The next prime is 111411091151. The reversal of 111411091089 is 980190114111.

The square root of 111411091089 is 333783.

It is a perfect power (a square), and thus also a powerful number.

It is not a de Polignac number, because 111411091089 - 2¹⁵ = 111411058321 is a prime.

It is a super-3 number, since 3×111411091089³ (a number of 34 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (111411091039) 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 14 ways as a sum of consecutive naturals, for example, 2985504 + ... + 3022590.

Almost surely, 2^111411091089 is an apocalyptic number.

111411091089 is the 333783-rd square number.

111411091089 is the 166892-nd centered octagonal number.

It is an amenable number.

111411091089 is a deficient number, since it is larger than the sum of its proper divisors (55022310408).

111411091089 is an frugal number, since it uses more digits than its factorization.

111411091089 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74186 (or 37090 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 36.

Multiplying 111411091089 by its sum of digits (36), we get a square (4010799279204 = 2002698²).

The spelling of 111411091089 in words is "one hundred eleven billion, four hundred eleven million, ninety-one thousand, eighty-nine".