28065086547 has 48 divisors (see below), whose sum is σ = 39195964800. Its totient is φ = 17856390400.

The previous prime is 28065086537. The next prime is 28065086549. The reversal of 28065086547 is 74568056082.

It is a happy number.

It is not a de Polignac number, because 28065086547 - 2⁷ = 28065086419 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 28065086547.

It is not an unprimeable number, because it can be changed into a prime (28065086549) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 69987547 + ... + 69987947.

It is an arithmetic number, because the mean of its divisors is an integer number (816582600).

Almost surely, 2^28065086547 is an apocalyptic number.

28065086547 is a deficient number, since it is larger than the sum of its proper divisors (11130878253).

28065086547 is a wasteful number, since it uses less digits than its factorization.

28065086547 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 736 (or 689 counting only the distinct ones).

The product of its (nonzero) digits is 3225600, while the sum is 51.

The spelling of 28065086547 in words is "twenty-eight billion, sixty-five million, eighty-six thousand, five hundred forty-seven".