728715085499 has 4 divisors (see below), whose sum is σ = 728783016360. Its totient is φ = 728647154640.

The previous prime is 728715085447. The next prime is 728715085517. The reversal of 728715085499 is 994580517827.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 728715085499 - 2³⁶ = 659995608763 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (728715082499) 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 in 3 ways as a sum of consecutive naturals, for example, 33949337 + ... + 33970794.

It is an arithmetic number, because the mean of its divisors is an integer number (182195754090).

Almost surely, 2^728715085499 is an apocalyptic number.

728715085499 is a deficient number, since it is larger than the sum of its proper divisors (67930861).

728715085499 is a wasteful number, since it uses less digits than its factorization.

728715085499 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67930860.

The product of its (nonzero) digits is 50803200, while the sum is 65.

The spelling of 728715085499 in words is "seven hundred twenty-eight billion, seven hundred fifteen million, eighty-five thousand, four hundred ninety-nine".