111109995925717 has 2 divisors, whose sum is σ = 111109995925718. Its totient is φ = 111109995925716.

The previous prime is 111109995925697. The next prime is 111109995925759. The reversal of 111109995925717 is 717529599901111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 85501072529041 + 25608923396676 = 9246679^2 + 5060526^2 .

It is a cyclic number.

It is not a de Polignac number, because 111109995925717 - 2⁷ = 111109995925589 is a prime.

It is a super-2 number, since 2×111109995925717² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111109995925787) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55554997962858 + 55554997962859.

It is an arithmetic number, because the mean of its divisors is an integer number (55554997962859).

Almost surely, 2^{111109995925717} is an apocalyptic number.

It is an amenable number.

111109995925717 is a deficient number, since it is larger than the sum of its proper divisors (1).

111109995925717 is an equidigital number, since it uses as much as digits as its factorization.

111109995925717 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16074450, while the sum is 67.

The spelling of 111109995925717 in words is "one hundred eleven trillion, one hundred nine billion, nine hundred ninety-five million, nine hundred twenty-five thousand, seven hundred seventeen".