28258484558647 has 12 divisors (see below), whose sum is σ = 32879690903640. Its totient is φ = 24215975720496.

The previous prime is 28258484558627. The next prime is 28258484558657. The reversal of 28258484558647 is 74685548485282.

It is a de Polignac number, because none of the positive numbers 2^k-28258484558647 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28258484558627) 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, 66243228 + ... + 66668449.

It is an arithmetic number, because the mean of its divisors is an integer number (2739974241970).

Almost surely, 2^{28258484558647} is an apocalyptic number.

28258484558647 is a deficient number, since it is larger than the sum of its proper divisors (4621206344993).

28258484558647 is a wasteful number, since it uses less digits than its factorization.

28258484558647 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132916030 (or 132916023 counting only the distinct ones).

The product of its digits is 5505024000, while the sum is 76.

The spelling of 28258484558647 in words is "twenty-eight trillion, two hundred fifty-eight billion, four hundred eighty-four million, five hundred fifty-eight thousand, six hundred forty-seven".