109808459569 has 8 divisors (see below), whose sum is σ = 110142723240. Its totient is φ = 109474409856.

The previous prime is 109808459549. The next prime is 109808459581. The reversal of 109808459569 is 965954808901.

It can be written as a sum of positive squares in 4 ways, for example, as 16062267169 + 93746192400 = 126737^2 + 306180^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 109808459569 - 2⁷ = 109808459441 is a prime.

It is a super-2 number, since 2×109808459569² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 109808459569.

It is not an unprimeable number, because it can be changed into a prime (109808459539) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1006317 + ... + 1110085.

It is an arithmetic number, because the mean of its divisors is an integer number (13767840405).

Almost surely, 2^109808459569 is an apocalyptic number.

It is an amenable number.

109808459569 is a deficient number, since it is larger than the sum of its proper divisors (334263671).

109808459569 is a wasteful number, since it uses less digits than its factorization.

109808459569 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106979.

The product of its (nonzero) digits is 27993600, while the sum is 64.

The spelling of 109808459569 in words is "one hundred nine billion, eight hundred eight million, four hundred fifty-nine thousand, five hundred sixty-nine".