728627218793 has 2 divisors, whose sum is σ = 728627218794. Its totient is φ = 728627218792.

The previous prime is 728627218783. The next prime is 728627218859. The reversal of 728627218793 is 397812726827.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 415292602624 + 313334616169 = 644432^2 + 559763^2 .

It is an emirp because it is prime and its reverse (397812726827) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 728627218793 - 2²⁴ = 728610441577 is a prime.

It is not a weakly prime, because it can be changed into another prime (728627218733) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 364313609396 + 364313609397.

It is an arithmetic number, because the mean of its divisors is an integer number (364313609397).

Almost surely, 2^728627218793 is an apocalyptic number.

It is an amenable number.

728627218793 is a deficient number, since it is larger than the sum of its proper divisors (1).

728627218793 is an equidigital number, since it uses as much as digits as its factorization.

728627218793 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 28449792, while the sum is 62.

The spelling of 728627218793 in words is "seven hundred twenty-eight billion, six hundred twenty-seven million, two hundred eighteen thousand, seven hundred ninety-three".