28007048165 has 4 divisors (see below), whose sum is σ = 33608457804. Its totient is φ = 22405638528.

The previous prime is 28007048159. The next prime is 28007048183. The reversal of 28007048165 is 56184070082.

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 15076401796 + 12930646369 = 122786^2 + 113713^2 .

It is a cyclic number.

It is not a de Polignac number, because 28007048165 - 2¹⁰ = 28007047141 is a prime.

It is a Duffinian number.

It is a congruent 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, 2800704812 + ... + 2800704821.

It is an arithmetic number, because the mean of its divisors is an integer number (8402114451).

Almost surely, 2^28007048165 is an apocalyptic number.

It is an amenable number.

28007048165 is a deficient number, since it is larger than the sum of its proper divisors (5601409639).

28007048165 is an equidigital number, since it uses as much as digits as its factorization.

28007048165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5601409638.

The product of its (nonzero) digits is 107520, while the sum is 41.

The spelling of 28007048165 in words is "twenty-eight billion, seven million, forty-eight thousand, one hundred sixty-five".