827863389465 has 64 divisors (see below), whose sum is σ = 1522000896000. Its totient is φ = 376404931584.

The previous prime is 827863389439. The next prime is 827863389481. The reversal of 827863389465 is 564983368728.

It is not a de Polignac number, because 827863389465 - 2⁵ = 827863389433 is a prime.

It is a Smith number, since the sum of its digits (69) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 827863389465.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 69219156 + ... + 69231114.

It is an arithmetic number, because the mean of its divisors is an integer number (23781264000).

Almost surely, 2^827863389465 is an apocalyptic number.

It is an amenable number.

827863389465 is a deficient number, since it is larger than the sum of its proper divisors (694137506535).

827863389465 is a wasteful number, since it uses less digits than its factorization.

827863389465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15486.

The product of its digits is 418037760, while the sum is 69.

The spelling of 827863389465 in words is "eight hundred twenty-seven billion, eight hundred sixty-three million, three hundred eighty-nine thousand, four hundred sixty-five".