728355669071 has 2 divisors, whose sum is σ = 728355669072. Its totient is φ = 728355669070.

The previous prime is 728355669049. The next prime is 728355669073. The reversal of 728355669071 is 170966553827.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 728355669071 - 2¹⁸ = 728355406927 is a prime.

Together with 728355669073, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 728355669071.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (728355669073) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 364177834535 + 364177834536.

It is an arithmetic number, because the mean of its divisors is an integer number (364177834536).

Almost surely, 2^728355669071 is an apocalyptic number.

728355669071 is a deficient number, since it is larger than the sum of its proper divisors (1).

728355669071 is an equidigital number, since it uses as much as digits as its factorization.

728355669071 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 19051200, while the sum is 59.

The spelling of 728355669071 in words is "seven hundred twenty-eight billion, three hundred fifty-five million, six hundred sixty-nine thousand, seventy-one".