108198287643309 has 4 divisors (see below), whose sum is σ = 144264383524416. Its totient is φ = 72132191762204.

The previous prime is 108198287643301. The next prime is 108198287643319. The reversal of 108198287643309 is 903346782891801.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 108198287643309 - 2³ = 108198287643301 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (108198287643301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18033047940549 + ... + 18033047940554.

It is an arithmetic number, because the mean of its divisors is an integer number (36066095881104).

Almost surely, 2^{108198287643309} is an apocalyptic number.

It is an amenable number.

108198287643309 is a deficient number, since it is larger than the sum of its proper divisors (36066095881107).

108198287643309 is an equidigital number, since it uses as much as digits as its factorization.

108198287643309 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36066095881106.

The product of its (nonzero) digits is 125411328, while the sum is 69.

The spelling of 108198287643309 in words is "one hundred eight trillion, one hundred ninety-eight billion, two hundred eighty-seven million, six hundred forty-three thousand, three hundred nine".