28445275017 has 12 divisors (see below), whose sum is σ = 41091677380. Its totient is φ = 18961643808.

The previous prime is 28445275013. The next prime is 28445275051. The reversal of 28445275017 is 71057254482.

28445275017 is a `hidden beast` number, since 2 + 84 + 45 + 27 + 501 + 7 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 16499659401 + 11945615616 = 128451^2 + 109296^2 .

It is not a de Polignac number, because 28445275017 - 2² = 28445275013 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28445275013) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 56542 + ... + 245127.

Almost surely, 2^28445275017 is an apocalyptic number.

It is an amenable number.

28445275017 is a deficient number, since it is larger than the sum of its proper divisors (12646402363).

28445275017 is a wasteful number, since it uses less digits than its factorization.

28445275017 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 312152 (or 312149 counting only the distinct ones).

The product of its (nonzero) digits is 627200, while the sum is 45.

The spelling of 28445275017 in words is "twenty-eight billion, four hundred forty-five million, two hundred seventy-five thousand, seventeen".