260305235506985 has 4 divisors (see below), whose sum is σ = 312366282608388. Its totient is φ = 208244188405584.

The previous prime is 260305235506969. The next prime is 260305235506997. The reversal of 260305235506985 is 589605532503062.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 38364991826704 + 221940243680281 = 6193948^2 + 14897659^2 .

It is a cyclic number.

It is not a de Polignac number, because 260305235506985 - 2⁴ = 260305235506969 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26030523550694 + ... + 26030523550703.

It is an arithmetic number, because the mean of its divisors is an integer number (78091570652097).

Almost surely, 2^{260305235506985} is an apocalyptic number.

It is an amenable number.

260305235506985 is a deficient number, since it is larger than the sum of its proper divisors (52061047101403).

260305235506985 is an equidigital number, since it uses as much as digits as its factorization.

260305235506985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52061047101402.

The product of its (nonzero) digits is 58320000, while the sum is 59.

The spelling of 260305235506985 in words is "two hundred sixty trillion, three hundred five billion, two hundred thirty-five million, five hundred six thousand, nine hundred eighty-five".