111112611345 has 24 divisors (see below), whose sum is σ = 196229068776. Its totient is φ = 58141943808.

The previous prime is 111112611299. The next prime is 111112611349. The reversal of 111112611345 is 543116211111.

It is a happy number.

111112611345 is a `hidden beast` number, since 1 + 1 + 1 + 1 + 1 + 2 + 611 + 3 + 45 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 2829495249 + 108283116096 = 53193^2 + 329064^2 .

It is not a de Polignac number, because 111112611345 - 2¹⁴ = 111112594961 is a prime.

It is not an unprimeable number, because it can be changed into a prime (111112611349) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 23291664 + ... + 23296433.

It is an arithmetic number, because the mean of its divisors is an integer number (8176211199).

Almost surely, 2^111112611345 is an apocalyptic number.

111112611345 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

111112611345 is a deficient number, since it is larger than the sum of its proper divisors (85116457431).

111112611345 is a wasteful number, since it uses less digits than its factorization.

111112611345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46588161 (or 46588158 counting only the distinct ones).

The product of its digits is 720, while the sum is 27.

Adding to 111112611345 its reverse (543116211111), we get a palindrome (654228822456).

The spelling of 111112611345 in words is "one hundred eleven billion, one hundred twelve million, six hundred eleven thousand, three hundred forty-five".