728811081333803 has 64 divisors (see below), whose sum is σ = 914262254438400. Its totient is φ = 572860430714880.

The previous prime is 728811081333787. The next prime is 728811081333827. The reversal of 728811081333803 is 308333180118827.

It is a cyclic number.

It is not a de Polignac number, because 728811081333803 - 2⁴ = 728811081333787 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (728811081333833) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 54960353 + ... + 66919821.

It is an arithmetic number, because the mean of its divisors is an integer number (14285347725600).

Almost surely, 2^{728811081333803} is an apocalyptic number.

728811081333803 is a deficient number, since it is larger than the sum of its proper divisors (185451173104597).

728811081333803 is a wasteful number, since it uses less digits than its factorization.

728811081333803 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11960172.

The product of its (nonzero) digits is 4644864, while the sum is 56.

The spelling of 728811081333803 in words is "seven hundred twenty-eight trillion, eight hundred eleven billion, eighty-one million, three hundred thirty-three thousand, eight hundred three".