728715959987 has 2 divisors, whose sum is σ = 728715959988. Its totient is φ = 728715959986.

The previous prime is 728715959953. The next prime is 728715960047. The reversal of 728715959987 is 789959517827.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 728715959987 - 2¹⁴ = 728715943603 is a prime.

It is not a weakly prime, because it can be changed into another prime (728715929987) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 364357979993 + 364357979994.

It is an arithmetic number, because the mean of its divisors is an integer number (364357979994).

Almost surely, 2^728715959987 is an apocalyptic number.

728715959987 is a deficient number, since it is larger than the sum of its proper divisors (1).

728715959987 is an equidigital number, since it uses as much as digits as its factorization.

728715959987 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 800150400, while the sum is 77.

The spelling of 728715959987 in words is "seven hundred twenty-eight billion, seven hundred fifteen million, nine hundred fifty-nine thousand, nine hundred eighty-seven".