108695085729 has 4 divisors (see below), whose sum is σ = 144926780976. Its totient is φ = 72463390484.

The previous prime is 108695085683. The next prime is 108695085731. The reversal of 108695085729 is 927580596801.

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 108695085729 - 2¹⁹ = 108694561441 is a prime.

It is a super-2 number, since 2×108695085729² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (108695085329) 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, 18115847619 + ... + 18115847624.

It is an arithmetic number, because the mean of its divisors is an integer number (36231695244).

Almost surely, 2^108695085729 is an apocalyptic number.

It is an amenable number.

108695085729 is a deficient number, since it is larger than the sum of its proper divisors (36231695247).

108695085729 is an equidigital number, since it uses as much as digits as its factorization.

108695085729 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36231695246.

The product of its (nonzero) digits is 10886400, while the sum is 60.

The spelling of 108695085729 in words is "one hundred eight billion, six hundred ninety-five million, eighty-five thousand, seven hundred twenty-nine".