11112005806897 has 2 divisors, whose sum is σ = 11112005806898. Its totient is φ = 11112005806896.

The previous prime is 11112005806877. The next prime is 11112005806901. The reversal of 11112005806897 is 79860850021111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10681333869361 + 430671937536 = 3268231^2 + 656256^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11112005806897 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11112005806897.

It is not a weakly prime, because it can be changed into another prime (11112005806877) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5556002903448 + 5556002903449.

It is an arithmetic number, because the mean of its divisors is an integer number (5556002903449).

Almost surely, 2^{11112005806897} is an apocalyptic number.

It is an amenable number.

11112005806897 is a deficient number, since it is larger than the sum of its proper divisors (1).

11112005806897 is an equidigital number, since it uses as much as digits as its factorization.

11112005806897 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 241920, while the sum is 49.

The spelling of 11112005806897 in words is "eleven trillion, one hundred twelve billion, five million, eight hundred six thousand, eight hundred ninety-seven".