109881791443 has 2 divisors, whose sum is σ = 109881791444. Its totient is φ = 109881791442.

The previous prime is 109881791441. The next prime is 109881791449. The reversal of 109881791443 is 344197188901.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 109881791443 - 2¹ = 109881791441 is a prime.

Together with 109881791441, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (109881791441) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 54940895721 + 54940895722.

It is an arithmetic number, because the mean of its divisors is an integer number (54940895722).

Almost surely, 2^109881791443 is an apocalyptic number.

109881791443 is a deficient number, since it is larger than the sum of its proper divisors (1).

109881791443 is an equidigital number, since it uses as much as digits as its factorization.

109881791443 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1741824, while the sum is 55.

The spelling of 109881791443 in words is "one hundred nine billion, eight hundred eighty-one million, seven hundred ninety-one thousand, four hundred forty-three".