728611286329 has 2 divisors, whose sum is σ = 728611286330. Its totient is φ = 728611286328.

The previous prime is 728611286323. The next prime is 728611286353. The reversal of 728611286329 is 923682116827.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 371431740304 + 357179546025 = 609452^2 + 597645^2 .

It is a cyclic number.

It is not a de Polignac number, because 728611286329 - 2¹³ = 728611278137 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 728611286329.

It is not a weakly prime, because it can be changed into another prime (728611286323) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 364305643164 + 364305643165.

It is an arithmetic number, because the mean of its divisors is an integer number (364305643165).

Almost surely, 2^728611286329 is an apocalyptic number.

It is an amenable number.

728611286329 is a deficient number, since it is larger than the sum of its proper divisors (1).

728611286329 is an equidigital number, since it uses as much as digits as its factorization.

728611286329 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3483648, while the sum is 55.

The spelling of 728611286329 in words is "seven hundred twenty-eight billion, six hundred eleven million, two hundred eighty-six thousand, three hundred twenty-nine".