108591373865 has 8 divisors (see below), whose sum is σ = 140333467848. Its totient is φ = 80190552960.

The previous prime is 108591373853. The next prime is 108591373937. The reversal of 108591373865 is 568373195801.

It can be written as a sum of positive squares in 4 ways, for example, as 21512675584 + 87078698281 = 146672^2 + 295091^2 .

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

It is not a de Polignac number, because 108591373865 - 2⁶ = 108591373801 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 108591373865.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 835318196 + ... + 835318325.

It is an arithmetic number, because the mean of its divisors is an integer number (17541683481).

Almost surely, 2^108591373865 is an apocalyptic number.

It is an amenable number.

108591373865 is a deficient number, since it is larger than the sum of its proper divisors (31742093983).

108591373865 is a wasteful number, since it uses less digits than its factorization.

108591373865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1670636539.

The product of its (nonzero) digits is 5443200, while the sum is 56.

The spelling of 108591373865 in words is "one hundred eight billion, five hundred ninety-one million, three hundred seventy-three thousand, eight hundred sixty-five".