28246961165 has 4 divisors (see below), whose sum is σ = 33896353404. Its totient is φ = 22597568928.

The previous prime is 28246961107. The next prime is 28246961189. The reversal of 28246961165 is 56116964282.

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 5531045641 + 22715915524 = 74371^2 + 150718^2 .

It is a cyclic number.

It is not a de Polignac number, because 28246961165 - 2⁸ = 28246960909 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2824696112 + ... + 2824696121.

It is an arithmetic number, because the mean of its divisors is an integer number (8474088351).

Almost surely, 2^28246961165 is an apocalyptic number.

It is an amenable number.

28246961165 is a deficient number, since it is larger than the sum of its proper divisors (5649392239).

28246961165 is an equidigital number, since it uses as much as digits as its factorization.

28246961165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5649392238.

The product of its digits is 1244160, while the sum is 50.

The spelling of 28246961165 in words is "twenty-eight billion, two hundred forty-six million, nine hundred sixty-one thousand, one hundred sixty-five".