728280654709 has 2 divisors, whose sum is σ = 728280654710. Its totient is φ = 728280654708.

The previous prime is 728280654707. The next prime is 728280654767. The reversal of 728280654709 is 907456082827.

It is a happy number.

728280654709 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an a-pointer prime, because the next prime (728280654767) can be obtained adding 728280654709 to its sum of digits (58).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 628833140100 + 99447514609 = 792990^2 + 315353^2 .

It is a cyclic number.

It is not a de Polignac number, because 728280654709 - 2¹ = 728280654707 is a prime.

Together with 728280654707, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (728280654707) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 364140327354 + 364140327355.

It is an arithmetic number, because the mean of its divisors is an integer number (364140327355).

Almost surely, 2^728280654709 is an apocalyptic number.

It is an amenable number.

728280654709 is a deficient number, since it is larger than the sum of its proper divisors (1).

728280654709 is an equidigital number, since it uses as much as digits as its factorization.

728280654709 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13547520, while the sum is 58.

The spelling of 728280654709 in words is "seven hundred twenty-eight billion, two hundred eighty million, six hundred fifty-four thousand, seven hundred nine".