108579753985 has 4 divisors (see below), whose sum is σ = 130295704788. Its totient is φ = 86863803184.

The previous prime is 108579753983. The next prime is 108579754111. The reversal of 108579753985 is 589357975801.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 589357975801 = 7 ⋅84193996543.

It can be written as a sum of positive squares in 2 ways, for example, as 63009032256 + 45570721729 = 251016^2 + 213473^2 .

It is a cyclic number.

It is not a de Polignac number, because 108579753985 - 2¹ = 108579753983 is a prime.

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 108579753985.

It is not an unprimeable number, because it can be changed into a prime (108579753983) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10857975394 + ... + 10857975403.

It is an arithmetic number, because the mean of its divisors is an integer number (32573926197).

Almost surely, 2^108579753985 is an apocalyptic number.

It is an amenable number.

108579753985 is a deficient number, since it is larger than the sum of its proper divisors (21715950803).

108579753985 is an equidigital number, since it uses as much as digits as its factorization.

108579753985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21715950802.

The product of its (nonzero) digits is 95256000, while the sum is 67.

The spelling of 108579753985 in words is "one hundred eight billion, five hundred seventy-nine million, seven hundred fifty-three thousand, nine hundred eighty-five".