28316465165 has 4 divisors (see below), whose sum is σ = 33979758204. Its totient is φ = 22653172128.

The previous prime is 28316465161. The next prime is 28316465183. The reversal of 28316465165 is 56156461382.

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 8704703401 + 19611761764 = 93299^2 + 140042^2 .

It is a cyclic number.

It is not a de Polignac number, because 28316465165 - 2² = 28316465161 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28316465161) by changing a digit.

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, 2831646512 + ... + 2831646521.

It is an arithmetic number, because the mean of its divisors is an integer number (8494939551).

Almost surely, 2^28316465165 is an apocalyptic number.

It is an amenable number.

28316465165 is a deficient number, since it is larger than the sum of its proper divisors (5663293039).

28316465165 is an equidigital number, since it uses as much as digits as its factorization.

28316465165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5663293038.

The product of its digits is 1036800, while the sum is 47.

The spelling of 28316465165 in words is "twenty-eight billion, three hundred sixteen million, four hundred sixty-five thousand, one hundred sixty-five".