111355451189 has 2 divisors, whose sum is σ = 111355451190. Its totient is φ = 111355451188.

The previous prime is 111355451173. The next prime is 111355451213. The reversal of 111355451189 is 981154553111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 60401418289 + 50954032900 = 245767^2 + 225730^2 .

It is an emirp because it is prime and its reverse (981154553111) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 111355451189 - 2⁴ = 111355451173 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111355451149) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55677725594 + 55677725595.

It is an arithmetic number, because the mean of its divisors is an integer number (55677725595).

Almost surely, 2^111355451189 is an apocalyptic number.

It is an amenable number.

111355451189 is a deficient number, since it is larger than the sum of its proper divisors (1).

111355451189 is an equidigital number, since it uses as much as digits as its factorization.

111355451189 is an evil number, because the sum of its binary digits is even.

The product of its digits is 108000, while the sum is 44.

The spelling of 111355451189 in words is "one hundred eleven billion, three hundred fifty-five million, four hundred fifty-one thousand, one hundred eighty-nine".