728355669073 has 2 divisors, whose sum is σ = 728355669074. Its totient is φ = 728355669072.

The previous prime is 728355669071. The next prime is 728355669127. The reversal of 728355669073 is 370966553827.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 369479191104 + 358876477969 = 607848^2 + 599063^2 .

It is a cyclic number.

It is not a de Polignac number, because 728355669073 - 2¹ = 728355669071 is a prime.

Together with 728355669071, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (728355669071) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 364177834536 + 364177834537.

It is an arithmetic number, because the mean of its divisors is an integer number (364177834537).

Almost surely, 2^728355669073 is an apocalyptic number.

It is an amenable number.

728355669073 is a deficient number, since it is larger than the sum of its proper divisors (1).

728355669073 is an equidigital number, since it uses as much as digits as its factorization.

728355669073 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 57153600, while the sum is 61.

The spelling of 728355669073 in words is "seven hundred twenty-eight billion, three hundred fifty-five million, six hundred sixty-nine thousand, seventy-three".