728473340723 has 2 divisors, whose sum is σ = 728473340724. Its totient is φ = 728473340722.

The previous prime is 728473340669. The next prime is 728473340729. The reversal of 728473340723 is 327043374827.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 728473340723 - 2⁶ = 728473340659 is a prime.

It is not a weakly prime, because it can be changed into another prime (728473340729) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 364236670361 + 364236670362.

It is an arithmetic number, because the mean of its divisors is an integer number (364236670362).

Almost surely, 2^728473340723 is an apocalyptic number.

728473340723 is a deficient number, since it is larger than the sum of its proper divisors (1).

728473340723 is an equidigital number, since it uses as much as digits as its factorization.

728473340723 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4741632, while the sum is 50.

The spelling of 728473340723 in words is "seven hundred twenty-eight billion, four hundred seventy-three million, three hundred forty thousand, seven hundred twenty-three".