28717300001745 has 12 divisors (see below), whose sum is σ = 49776653336436. Its totient is φ = 15315893334240.

The previous prime is 28717300001707. The next prime is 28717300001749. The reversal of 28717300001745 is 54710000371782.

28717300001745 is a `hidden beast` number, since 287 + 17 + 300 + 0 + 0 + 17 + 45 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 11415160948689 + 17302139053056 = 3378633^2 + 4159584^2 .

It is not a de Polignac number, because 28717300001745 - 2¹⁰ = 28717300000721 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45), and also a Moran number because the ratio is a prime number: 638162222261 = 28717300001745 / (2 + 8 + 7 + 1 + 7 + 3 + 0 + 0 + 0 + 0 + 1 + 7 + 4 + 5).

It is a self number, because there is not a number n which added to its sum of digits gives 28717300001745.

It is not an unprimeable number, because it can be changed into a prime (28717300001749) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 319081111086 + ... + 319081111175.

It is an arithmetic number, because the mean of its divisors is an integer number (4148054444703).

Almost surely, 2^{28717300001745} is an apocalyptic number.

It is an amenable number.

28717300001745 is a deficient number, since it is larger than the sum of its proper divisors (21059353334691).

28717300001745 is a wasteful number, since it uses less digits than its factorization.

28717300001745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 638162222272 (or 638162222269 counting only the distinct ones).

The product of its (nonzero) digits is 329280, while the sum is 45.

The spelling of 28717300001745 in words is "twenty-eight trillion, seven hundred seventeen billion, three hundred million, one thousand, seven hundred forty-five".