110000001000991 has 2 divisors, whose sum is σ = 110000001000992. Its totient is φ = 110000001000990.

The previous prime is 110000001000983. The next prime is 110000001001019. The reversal of 110000001000991 is 199000100000011.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 110000001000991 - 2³ = 110000001000983 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (110000001000931) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55000000500495 + 55000000500496.

It is an arithmetic number, because the mean of its divisors is an integer number (55000000500496).

Almost surely, 2^{110000001000991} is an apocalyptic number.

110000001000991 is a deficient number, since it is larger than the sum of its proper divisors (1).

110000001000991 is an equidigital number, since it uses as much as digits as its factorization.

110000001000991 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 81, while the sum is 22.

The spelling of 110000001000991 in words is "one hundred ten trillion, one million, nine hundred ninety-one", and thus it is an aban number.