28923803717 has 2 divisors, whose sum is σ = 28923803718. Its totient is φ = 28923803716.

The previous prime is 28923803687. The next prime is 28923803749. The reversal of 28923803717 is 71730832982.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 27280798561 + 1643005156 = 165169^2 + 40534^2 .

It is a cyclic number.

It is not a de Polignac number, because 28923803717 - 2¹⁸ = 28923541573 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28923803017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14461901858 + 14461901859.

It is an arithmetic number, because the mean of its divisors is an integer number (14461901859).

Almost surely, 2^28923803717 is an apocalyptic number.

It is an amenable number.

28923803717 is a deficient number, since it is larger than the sum of its proper divisors (1).

28923803717 is an equidigital number, since it uses as much as digits as its factorization.

28923803717 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1016064, while the sum is 50.

The spelling of 28923803717 in words is "twenty-eight billion, nine hundred twenty-three million, eight hundred three thousand, seven hundred seventeen".