1091333449799 has 4 divisors (see below), whose sum is σ = 1148772052440. Its totient is φ = 1033894847160.

The previous prime is 1091333449793. The next prime is 1091333449813. The reversal of 1091333449799 is 9979443331901.

1091333449799 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1091333449799 - 2¹⁶ = 1091333384263 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1091333449793) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28719301292 + ... + 28719301329.

It is an arithmetic number, because the mean of its divisors is an integer number (287193013110).

Almost surely, 2^{1091333449799} is an apocalyptic number.

1091333449799 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

1091333449799 is a deficient number, since it is larger than the sum of its proper divisors (57438602641).

1091333449799 is an equidigital number, since it uses as much as digits as its factorization.

1091333449799 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57438602640.

The product of its (nonzero) digits is 19840464, while the sum is 62.

The spelling of 1091333449799 in words is "one trillion, ninety-one billion, three hundred thirty-three million, four hundred forty-nine thousand, seven hundred ninety-nine".