28230681165 has 16 divisors (see below), whose sum is σ = 45439567488. Its totient is φ = 14966204096.

The previous prime is 28230681161. The next prime is 28230681203. The reversal of 28230681165 is 56118603282.

It is a cyclic number.

It is not a de Polignac number, because 28230681165 - 2² = 28230681161 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28230681161) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5632362 + ... + 5637371.

It is an arithmetic number, because the mean of its divisors is an integer number (2839972968).

Almost surely, 2^28230681165 is an apocalyptic number.

It is an amenable number.

28230681165 is a deficient number, since it is larger than the sum of its proper divisors (17208886323).

28230681165 is a wasteful number, since it uses less digits than its factorization.

28230681165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11269908.

The product of its (nonzero) digits is 138240, while the sum is 42.

The spelling of 28230681165 in words is "twenty-eight billion, two hundred thirty million, six hundred eighty-one thousand, one hundred sixty-five".