109091819099 has 2 divisors, whose sum is σ = 109091819100. Its totient is φ = 109091819098.

The previous prime is 109091819069. The next prime is 109091819131. The reversal of 109091819099 is 990918190901.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 109091819099 - 2¹² = 109091815003 is a prime.

It is not a weakly prime, because it can be changed into another prime (109091819069) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 54545909549 + 54545909550.

It is an arithmetic number, because the mean of its divisors is an integer number (54545909550).

Almost surely, 2^109091819099 is an apocalyptic number.

109091819099 is a deficient number, since it is larger than the sum of its proper divisors (1).

109091819099 is an equidigital number, since it uses as much as digits as its factorization.

109091819099 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 472392, while the sum is 56.

The spelling of 109091819099 in words is "one hundred nine billion, ninety-one million, eight hundred nineteen thousand, ninety-nine".