111111000561009 has 12 divisors (see below), whose sum is σ = 160503300588852. Its totient is φ = 74069554322400.

The previous prime is 111111000560971. The next prime is 111111000561013. The reversal of 111111000561009 is 900165000111111.

It can be written as a sum of positive squares in 2 ways, for example, as 57468149600625 + 53642850960384 = 7580775^2 + 7324128^2 .

It is not a de Polignac number, because 111111000561009 - 2²⁹ = 111110463690097 is a prime.

It is not an unprimeable number, because it can be changed into a prime (111111000561049) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 370346022 + ... + 370645919.

It is an arithmetic number, because the mean of its divisors is an integer number (13375275049071).

Almost surely, 2^{111111000561009} is an apocalyptic number.

It is an amenable number.

111111000561009 is a deficient number, since it is larger than the sum of its proper divisors (49392300027843).

111111000561009 is a wasteful number, since it uses less digits than its factorization.

111111000561009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 741008608 (or 741008605 counting only the distinct ones).

The product of its (nonzero) digits is 270, while the sum is 27.

The spelling of 111111000561009 in words is "one hundred eleven trillion, one hundred eleven billion, five hundred sixty-one thousand, nine".