26985814265 has 4 divisors (see below), whose sum is σ = 32382977124. Its totient is φ = 21588651408.

The previous prime is 26985814259. The next prime is 26985814283. The reversal of 26985814265 is 56241858962.

It is a happy number.

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 15505977529 + 11479836736 = 124523^2 + 107144^2 .

It is a cyclic number.

It is not a de Polignac number, because 26985814265 - 2⁶ = 26985814201 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 26985814265.

It is an unprimeable number.

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, 2698581422 + ... + 2698581431.

It is an arithmetic number, because the mean of its divisors is an integer number (8095744281).

Almost surely, 2^26985814265 is an apocalyptic number.

It is an amenable number.

26985814265 is a deficient number, since it is larger than the sum of its proper divisors (5397162859).

26985814265 is an equidigital number, since it uses as much as digits as its factorization.

26985814265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5397162858.

The product of its digits is 8294400, while the sum is 56.

The spelling of 26985814265 in words is "twenty-six billion, nine hundred eighty-five million, eight hundred fourteen thousand, two hundred sixty-five".