728159295616 has 32 divisors (see below), whose sum is σ = 1497424366080. Its totient is φ = 352335141120.

The previous prime is 728159295587. The next prime is 728159295667. The reversal of 728159295616 is 616592951827.

It is a tau number, because it is divible by the number of its divisors (32).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 91749976 + ... + 91757911.

It is an arithmetic number, because the mean of its divisors is an integer number (46794511440).

Almost surely, 2^728159295616 is an apocalyptic number.

It is an amenable number.

728159295616 is an abundant number, since it is smaller than the sum of its proper divisors (769265070464).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

728159295616 is a wasteful number, since it uses less digits than its factorization.

728159295616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 183507932 (or 183507920 counting only the distinct ones).

The product of its digits is 16329600, while the sum is 61.

The spelling of 728159295616 in words is "seven hundred twenty-eight billion, one hundred fifty-nine million, two hundred ninety-five thousand, six hundred sixteen".