11110000999991 has 2 divisors, whose sum is σ = 11110000999992. Its totient is φ = 11110000999990.

The previous prime is 11110000999921. The next prime is 11110001000071. The reversal of 11110000999991 is 19999900001111.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 11110000999991 - 2¹⁴ = 11110000983607 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11110000999921) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5555000499995 + 5555000499996.

It is an arithmetic number, because the mean of its divisors is an integer number (5555000499996).

Almost surely, 2^{11110000999991} is an apocalyptic number.

11110000999991 is a deficient number, since it is larger than the sum of its proper divisors (1).

11110000999991 is an equidigital number, since it uses as much as digits as its factorization.

11110000999991 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 59049, while the sum is 50.

The spelling of 11110000999991 in words is "eleven trillion, one hundred ten billion, nine hundred ninety-nine thousand, nine hundred ninety-one".