12895851065 has 4 divisors (see below), whose sum is σ = 15475021284. Its totient is φ = 10316680848.

The previous prime is 12895851053. The next prime is 12895851097. The reversal of 12895851065 is 56015859821.

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 9645596944 + 3250254121 = 98212^2 + 57011^2 .

It is a cyclic number.

It is not a de Polignac number, because 12895851065 - 2⁸ = 12895850809 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1289585102 + ... + 1289585111.

It is an arithmetic number, because the mean of its divisors is an integer number (3868755321).

Almost surely, 2^12895851065 is an apocalyptic number.

It is an amenable number.

12895851065 is a deficient number, since it is larger than the sum of its proper divisors (2579170219).

12895851065 is an equidigital number, since it uses as much as digits as its factorization.

12895851065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2579170218.

The product of its (nonzero) digits is 864000, while the sum is 50.

The spelling of 12895851065 in words is "twelve billion, eight hundred ninety-five million, eight hundred fifty-one thousand, sixty-five".