108561528785 has 8 divisors (see below), whose sum is σ = 130690046760. Its totient is φ = 86571748224.

The previous prime is 108561528781. The next prime is 108561528791. The reversal of 108561528785 is 587825165801.

It can be written as a sum of positive squares in 4 ways, for example, as 12787991056 + 95773537729 = 113084^2 + 309473^2 .

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 108561528785 - 2² = 108561528781 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 108561528785.

It is not an unprimeable number, because it can be changed into a prime (108561528781) 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, 34682630 + ... + 34685759.

It is an arithmetic number, because the mean of its divisors is an integer number (16336255845).

Almost surely, 2^108561528785 is an apocalyptic number.

It is an amenable number.

108561528785 is a deficient number, since it is larger than the sum of its proper divisors (22128517975).

108561528785 is an equidigital number, since it uses as much as digits as its factorization.

108561528785 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69368707.

The product of its (nonzero) digits is 5376000, while the sum is 56.

The spelling of 108561528785 in words is "one hundred eight billion, five hundred sixty-one million, five hundred twenty-eight thousand, seven hundred eighty-five".