28321044863 has 2 divisors, whose sum is σ = 28321044864. Its totient is φ = 28321044862.

The previous prime is 28321044859. The next prime is 28321044901. The reversal of 28321044863 is 36844012382.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28321044863 - 2² = 28321044859 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 28321044863.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28321040863) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14160522431 + 14160522432.

It is an arithmetic number, because the mean of its divisors is an integer number (14160522432).

Almost surely, 2^28321044863 is an apocalyptic number.

28321044863 is a deficient number, since it is larger than the sum of its proper divisors (1).

28321044863 is an equidigital number, since it uses as much as digits as its factorization.

28321044863 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 221184, while the sum is 41.

The spelling of 28321044863 in words is "twenty-eight billion, three hundred twenty-one million, forty-four thousand, eight hundred sixty-three".