1111100642909 has 2 divisors, whose sum is σ = 1111100642910. Its totient is φ = 1111100642908.

The previous prime is 1111100642903. The next prime is 1111100642929. The reversal of 1111100642909 is 9092460011111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 999580044100 + 111520598809 = 999790^2 + 333947^2 .

It is a cyclic number.

It is not a de Polignac number, because 1111100642909 - 2⁴ = 1111100642893 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1111100642903) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 555550321454 + 555550321455.

It is an arithmetic number, because the mean of its divisors is an integer number (555550321455).

Almost surely, 2^{1111100642909} is an apocalyptic number.

It is an amenable number.

1111100642909 is a deficient number, since it is larger than the sum of its proper divisors (1).

1111100642909 is an equidigital number, since it uses as much as digits as its factorization.

1111100642909 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3888, while the sum is 35.

The spelling of 1111100642909 in words is "one trillion, one hundred eleven billion, one hundred million, six hundred forty-two thousand, nine hundred nine".