28110651217 has 16 divisors (see below), whose sum is σ = 30840270912. Its totient is φ = 25410208320.

The previous prime is 28110651187. The next prime is 28110651227. The reversal of 28110651217 is 71215601182.

It is a cyclic number.

It is not a de Polignac number, because 28110651217 - 2¹⁵ = 28110618449 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28110651227) 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 15 ways as a sum of consecutive naturals, for example, 5278318 + ... + 5283640.

It is an arithmetic number, because the mean of its divisors is an integer number (1927516932).

Almost surely, 2^28110651217 is an apocalyptic number.

It is an amenable number.

28110651217 is a deficient number, since it is larger than the sum of its proper divisors (2729619695).

28110651217 is a wasteful number, since it uses less digits than its factorization.

28110651217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7968.

The product of its (nonzero) digits is 6720, while the sum is 34.

The spelling of 28110651217 in words is "twenty-eight billion, one hundred ten million, six hundred fifty-one thousand, two hundred seventeen".