1111106807809 has 2 divisors, whose sum is σ = 1111106807810. Its totient is φ = 1111106807808.

The previous prime is 1111106807773. The next prime is 1111106807827. The reversal of 1111106807809 is 9087086011111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1110277367809 + 829440000 = 1053697^2 + 28800^2 .

It is an emirp because it is prime and its reverse (9087086011111) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1111106807809 - 2¹⁵ = 1111106775041 is a prime.

It is not a weakly prime, because it can be changed into another prime (1111106807849) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 555553403904 + 555553403905.

It is an arithmetic number, because the mean of its divisors is an integer number (555553403905).

Almost surely, 2^{1111106807809} is an apocalyptic number.

It is an amenable number.

1111106807809 is a deficient number, since it is larger than the sum of its proper divisors (1).

1111106807809 is an equidigital number, since it uses as much as digits as its factorization.

1111106807809 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 24192, while the sum is 43.

The spelling of 1111106807809 in words is "one trillion, one hundred eleven billion, one hundred six million, eight hundred seven thousand, eight hundred nine".